Heres a select few pics of the URG-I in the wild. Did that change recently? The Complete offering uses a 14.5-inch Daniel Defense barrel designed specifically for the relatively new M855A1 Enhanced Performance Round, and comes with a Surefire SF4P flash hider, which suppresses the highly visible flash that occurs during a shot. I already have a few cheaper built ARs, but lately steering towards the buy once, cry once mentality, wanting a rifle that will last a lifetime, along with regular parts maintenance. Daniel Defense is an American arms manufacturer founded in 2002 by Marty Daniel in Savannah, Georgia. Daniel Defense Rifle Barrel Assembly, 5.56mm NATO, 1:7 Twist, GOV/MID (4) $335.99 $328.00 That's about 2 grands worth of ammo. This Daniel Defense Rifle Barrel Assembly is 14.5" in length, it features a mid-length gas system and uses a 1:7 twist. Daniel Defense DDM4V7 LW - Specifications Caliber: 5.56 NATO Weight: 6.05 lbs Rifle Length: Modular - 32-1/4" to 35-7/8" Action: Semi-Automatic Safety: Ambidextrous Rifle Barrel Length: 16 Rifle Barrel Twist: 1:7 Barrel Thread Pitch: 1/228 TPI Scope Mount: 1913 Picatinny rail and M-LOK attachment technology Magazines Included: 32 rounds . Gear Expert, It's this which has broadened the term URG-I. This looks awesome! Ex-soldier, a neo-Nazi, gets 45 years for plot to ambush his own unit, Issues with the Armys Europe-based equipment trigger readiness alarms, Veterans Affairs drops mask requirement for all agency medical offices, How the Marine Corps is preparing for era of contested logistics, Tax scams How to report them Money Minute, Capitol Hill weighs action on two controversial topics: medical marijuana and abortion, Lockheed wins hypersonics contract | Defense Dollars, Go inside a secret nuclear fallout bunker sealed for decades, Perennial pilot shortage puts Air Force in precarious position, Pentagon again denies helping Ukraine attack targets inside Russia. While expensive for an AR-15 pattern rifle, it has the benefit of an excellent trigger, accurate barrel, and quality parts made or handpicked by a company known for excellence. So, I read all the posts on this rifle and still went ahead and bought an unused SD in the box for $750.00. Besides the Geissele I have seen a BCM flex with normal grip during a night shoot that put the POI off by 2 feet at 50 Yards. Trigger, BCG, muzzle device are upgrades over the DD, but will the rest of the rifle be comparable to DD? Specifications: Material: Hard-Coat Anodized 6061 T6 Aluminum, Steel Weight: 570g Compatibility: Tokyo Marui-Spec and Systema PTW-Spec M4/M16 Airsoft Upper Receivers Package Includes: Rail System, Universal Barrel Nut, MWS Barrel Base, 1x 10" Barrel Extension, 1x 11" Barrel Extension, Dummy Gas Block, Wedge Set About DYTAC In fact, the new AR-15 USASOC URGI, marketed by Brownells on behalf of Geissele, is virtually a clone of the same new Upper Receiver Group - Improved currently being phased into service with the US Armys various Special Forces Groups, and the 75th Ranger Regiment. What requirements do you have that soft shooting, moa accurate and reliable thus far doesnt meet? - Geisselle Low Profile Gas Block. heres to hoping they dont sell out by then. Check out the full details below: Length - 10.5" Stainless Steel or Cold Hammer Forged 5.56 with 1/7 Twist or Stainless Steel 300BLK with 1/7 twist Gas Block - Lo-Pro, .750, pinned to barrel. 2). The barrel gets a Super Modular Mk16 handguard, with M-lok slots. Overall, they are great rifles. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Im going to go the other way: Geissele. it essentially makes for a brand new weapon. Specifications and pricing subject to change. While best rail the MK16 isnt; your and the internets interpretations of shift are not correct. https://www.ar15.com/media/mediaFiles/366627/244C1AAE-7047-4ED4-AB68-AA2AAB7C81B2_4_5-2021077.JPG. Both are probably good. Id go DD for sure. Its fully ambidextrous lower offers right- and left-handed shooters with even more flexibility and control, while a 10.5-inch RIS III rail provides . Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. I have never had a better trigger than my Geissele. Lightweight carbon-fiber-reinforced polymer construction Surface grip feature for performance-driven control in all situations Improved feed lip design for optimized feeding and reliability Impact absorbing baseplate design for long-lasting durability Enhanced anti-tilt follower for reliable feeding Buy Now The Six Benefits of Firearm Ownership I have both and would go G. Ive ended up with quite a few G rifles and Id go with the 14.5 pinned if I could only have one. Does any one with "insider" or experiential info know what the 16" SD complete rifles were designed to shoot the best with. Never having fought inside structures, does that 1.5" really make enough difference to make it worthwhile to SBR all one's lowers or, alternatively, to deal with the pin/weld hassle? There are some pretty good discount coupons floating around too. All builds done on Aero Precision lowers with BCM A5 buffers. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. I was wondering if anyone with any experience with both had any insight on which is better and why. Barrel lengths and buttstocks have changed, but more or less the evolution of America's right arm has proceeded apace with each generation of warri . I've owned both and G is the better rifle. They now come with ambi both now. If I needed one now, I wouldn't hesitate. I thought the urgi were not coupon eligible. URGI comes with the Geissele Reliability Enhanced Bolt Carrier Group. This article first appeared last year. - AR15 Accessories & Parts at GunBroker.com : 966534592 You must Sign In or Register for a GunBroker.com account to take action on this item. Still not a KAC or JP. Whos the window licker fanboy? -vastly superior trigger. I'm late to the party here but I do have a question: More good points all around. The barrels are either Colt or Daniel Defense government profile chrome-lined barrel, both of which have been used widely by military and law enforcement units. It is not suggested that a 10.3 version has been issued, however. G actually used DD barrels on the URG-i submission. For a better experience, please enable JavaScript in your browser before proceeding. I wanted to add this has been updated in the description, these will ship with the SF flash hider mounts and NOT warcomps, changing the value significantly in my opinion. The upper receiver, including the barrel, bolt carrier group, upper receiver, and handguard, mates to the lower receiver with the help of two captured pins. Ive owned three DDs. HANDGUARD: Daniel Defense M4A1 Rail Interface System (RIS) II, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized FDE RAIL LADDERS: 3 FDE low profile ladders made from Santoprene, heat resistant to 300 F. SIGHTS: Sold Separately Made in the USA! Not quite. If your looking for a cheap barrel, this isnt it! Just looked at their site today. I want my rail to work as if should. I installed a Larue trigger, Radian charging handle and safety over the years. Also, I like BCM grip and stocks. Ricky, You must log in or register to reply here. The URGI upper is as close as you'll get to operating operationally like a real operator. 2023 Daniel Defense LLC All Rights Reserved. Geissele further states that the URG-I upper is optimized for the Armys new 5.56-millimeter M855A1 Enhanced Performance Round. Geisseles URGI is available in both a Stripped and Complete model, and can be snapped onto most available ARs on the civilian market today. If anyone wanted it I would gladly sell it and buy a DD. But, given the features, its hard to argue that there is a better value for price on the market right now. An ambidextrous Airborne Charging Handle also comes with the Complete model. Was about to buy a Bcm socom upper but it's carbine length, I may have to wait for this. URG-I stands for Upper Receiver Group, Improved. Daniel Defense delivers a reliable, accurate AR-15 in the DDM4 V7 with enough extras to keep 5.56 fans interested. The mid-length gas system provides smooth and reliable cycling under any condition and reduces both . Shop now and get Free Value Shipping on most orders over $49 to the Privacy Policy. Inova-GoHealth Urgent Care - Vienna. Mbz2020, JavaScript is disabled. Any use of this content without express written consent is prohibited. Ethan, receipt, and we'll cover the cost of return shipping. The commonality between the M4A1 and AR-15 rifles means that Geissele currently offers for sale a civilian version of the URG-I upper. If I didn't run KAC SR15's, I would probably snag a few of these. What do you mean by legit? Aside from possibly the barrel, everything about it is better. Thank you. Hoping its a site malfunction, im going to call in the morning and try to order. There is a noticeable difference. The HK employs a gas piston operating system where the MK18 uses a direct impingement gas system common on most AR platforms. As far as small group of users. In the guts of the Complete model is a mid-length gas system with a low-profile gas block a non-standard modification that allows for better round cycling for follow-up shots than the average gas tubes that most ARs come with today. Barrel extension has M4-type feed ramps. 4). Gear Expert, How do they shoot? AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Learn more about our Return Policy. restaurants near courtyard marriott Intl. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. We want to ensure that making a return is as easy and hassle-free as possible! You get a lot for your money. I am sure he was simply stating company policy. Both are more accurate than I am. One new winner* is announced every week! Thanks to Geissele Automatics of New Wales, Pennsylvania, civilian gun owners and firearms enthusiasts can now get their hands on an AR upper receiver worthy of US Army Special Operations Command. Can the mk 16 handguard be removed on/off, if the barrel is pin and welded to the surefire 4 prong? The MK18 is a 10.3 inch short barreled AR-15 made by Daniel Defense. -forged bolt/upgraded bolt material. For your friendly neighborhood cloner and mil-spec disciple, picking up Geisseles URGI is definitely the closest you can get to running an AR similar to the rifles that Americas elite use on the front lines of battle every day. Daniel Defense AR15 and Bolt Action Rifle Barrels | Daniel Defense Home Barrels View Compared 0 Barrels Looking for something specific? AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. An avid outdoorsman, Ian is also a guns and gear enthusiast. I've put about 500 rounds through a 16" super duty rifle. I think I heard Roland state on one of the modcasts that he prefers 14.5", to the point that it'd be worth it to SBR all one's lowers. So why have CS? I guess I just am not seeing whats being offered by Geissele and I know others have remove the 42 spring set up and replaced it with the A5. If I could wait, their Black Friday sales are awesome. If you dont need the step cut for an M203 there are tons of better options. Ive been killing myself going back and forth past few days, any help w any tidbit of advice would be greatly appreciated, ****Edit Hmmlooks like they may be out of stock? But at 1750 -2150 and no background on full builds..shittttt. WTS Geissele Super Duty Complete Upper, 14.5" DDC Asking $1200, Geissele Super Duty 10.3 DDC stripped upper, Help me choose my 5.56 SBR Upper - DD or Geissele. I was looking at a slightly used DDM4V5 on armslist for $1250 obo. Do the backordered URGI 14.5 uppers still use the Daniel Defense barrels or have you switched to Geissele CHF barrels on them (and if so are they chrome lined)? The 10.3 inch Cold Hammer Forged barrel is the same length in use for the MK18 upper most commonly used for CQB . I'm planning on running both suppressed (YHM Turbo K for now). The Complete offering uses a 14.5-inch Daniel Defense barrel designed specifically for the relatively new M855A1 Enhanced Performance Round, and comes with a Surefire SF4P flash hider, which. Ive been looking for a higher tier rifle lately so this helps me a lot. This is my third dd barrel and I dont think Ill buy any others. Function was flawless, and in fact was surprisingly well tuned for an issue rifle. Find the top cans, find the one issued to the most Assaulters and pick that one. I guess instead I should just put my Steiner 1-4 on what I all ready have. Except for KAC the Geissele duper duty is ahead in features and advanced materials. I think there is a post on ar15.com with them. Following substantial growth from a 2002 U.S. Army Special Forces grant for M4 upper receivers, Daniel Defense expanded in 2009 and moved into a new manufacturing facility in Black Creek, Georgia, where it is now based. - Daniel Defense 14.5" Mid Length Barrel With A Pinned And Welded Surefire 3 Prong WarComp. OD at gas block is .750". The AR-15 pattern rifle, including the M-16A2, M4A1 carbine, and civilian AR-15 share almost all key parts. The so-called "government profile" adds thickness to the. The Daniel Defense barrel should offer greater accuracy over a standard Army issue rifle barrel, likely minute of angle or better. Daniel Defense Barrels Daniel Defense Barrels Department Sort By Default Most Recent Oldest Price: Low to High Price: High to Low Rating Showing 1-7 of 7 items Daniel Defense 16 Lightweight Mid Length Barrel Price $328.00 07-078-09136-018 Daniel Defense Daniel Defense 16 Government Barrel Price $328.00 07-077-09173-018 Daniel Defense The parts we used do not perfectly match what USASOC is using because we are not cloners. 5 In the market for another 11. This short-barreled version of Daniel Defense's DD4 RIII comes with an 11.5-inch Government-profile barrel for maximum maneuverability and a carbine-length gas system for smooth, reliable cycling. Then again, you could likely flip it for some extra money towards something else. (C'mon VSASS!). Either of them are awesome rifles but I would get the G rifle. Good news for all URGI MK16 enthusiasts! Hi all - I'm looking to purchase an "upper tier" factory 16" rifle for hard use, specifically trying to choose between the DDM4 V7 and the Geissele Super Duty. I bought a URGI rifle when they offered them. daniel defense (in stock) 4.0 (2) m4v7 carbine 5.56 16" brown. YMMV. Hunter, But in all seriousness who isnt using Surefire Cans these days. I have a complete ODG SD and look forward to receiving my 10.3 URGI. They are black ox as well. 9AM-5PM CT Sat-Sun (Chat & Email Only), Daniel Defense 0707719125018 14.5 Barrel .223 Rem/5.56 NATO. The Daniel Defense M4 V11 is an upgrade from the V9 series carbines with the added benefits of having the KeyMod System and the integrated SliM Rail. My other rifles are soft shooters and meet the 1.5 to 2.0 moa with red dots. Have a look Googling borescoped DD barrels, and that ought to help clarify why they cost what they do. Built around a Cold Hammer Forged, 16 inch barrel, the V7 has a DD improved Flash Suppressor to reduce flash signature. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Daniel Defense 0707709173018 Barrel .223 Rem/5.56 NATO 16" -. For the best experience on our site, be sure to turn on Javascript in your browser. When they had them listed for under 1250 or 1350 it was a solid buy just because of the companys QC and past product. For more information, please see our The modular nature of the platform also means that a patient AR-15 owner with a modestly priced rifle could gradually upgrade to a rifle just as good. The Daniel Defense 0707709173018 Barrel .223 Rem/5.56 NATO 16" is a quality addition to the Daniel Defense lineup. Good points raised all around - much appreciated. The 14.5 URGI upper with a Surefire can on it is pretty soft shooting, and is one of the first Id grab out of the safe should it really be needed. Highly recommended no matter which size or caliber. Admittedly I've been leaning towards DD since the beginning so I think I will hold out for one. I was cool with pinned warcomps, but having to switch muzzle devices on a pinned upper, the juice is not worth the squeeze. It was measured based off the top of the Upper receiver. The DDM4 V7 AR15 style firearm features M-LOK attachment technology with the Daniel Defense MFR 15.0 rail. On the civilian side? It was a cheap upper so cheap value. Kyle Mizokami is a writer based in San Francisco who has appeared in The Diplomat, Foreign Policy, War is Boring and The Daily Beast. The rifle version includes a URG-I upper lower receiver built by the company and fitted with a Geissele Super Select Fire X trigger (converted to semi-automatic), company Maritime Bolt Catch, and B5 Systems SOPMOD stock. A mk18, a mk12, and a m4v1. The Knights NT-4 is another great option, its just bit outdated and doesnt do anything better than the Surefire SOCOM, aside from be heavier. 5). [ARCHIVED THREAD] - Backordered 14.5 URGI upper barrels. Colt URGI 14.5 clone correct, Daniel Defense barrel, Geissele mk16 rail. I get that, but I personally dont want to feed into the multitude of competing industry standards. Super Duty has match ring mated upper / rail dovetail connection. For me personally the WE outer barrels are very welcome as there are hardly any after market outer barrels for the WE M4 GBBR platfo. You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. Still, we used very high-quality parts and trust that the rifle will perform to the same high standards as the issued rifles. I have Geissele SSE triggers in my rifles and really like them. While expensive for an AR-15 pattern rifle, it has the benefit of an excellent trigger, accurate barrel, and quality parts made or handpicked by a company known for excellence. Both are excellent. USASOCs elements (some of whom already have the URG-I) largely use the M4A1 with the Block II accessory package. Because the AR15.com thread is trustworthy, Ill directly quote the 14.5 URG-I setup recommended: Grip standard M16A2/M16A3/M16A4/M4/M4A1, Selector- Colt full auto ambi P/N SP401017, Bolt carrier group standard M16A4/M4/M4A1, Charging handle Geissele Airborne Charging Handle in Desert Dirt Color with subdued markings- P/N 05-664S NSN 1005-01-672-4803, Barrel DanielDefense 14.5 mid length GOV profile with .076 gas port P/N 07-077-07308, Gas block Daniel Defense pinned gas block which comes on their rifles and URGs, Gas tube Daniel Defense mid length P/N 04-013-18034, Hand guard Geissele 13.5 MK16 in Desert Dirt Color- P/N 05-650S- NSN 1005-01-672-4794, M-LOK rail section Magpul 7 slot aluminum P/N MAG582-BLK, Muzzle device SureFire 4 prong flash hider P/N FH556RC, Suppressor SureFire SOCOM in Dark Earth P/N SOCOM556-RC, Front BUIS Knights Armament Front Flip Sight in Taupe P/N 99051. I suspect those groups will be better once the 1-8x I have on order comes in. Thank you all for the great input. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. That should tell you about anything you need to know. Super Duty uppers have Geissele profile barrels, same color ano center tab receivers and rails, and Nano coated SF closed tine flash hiders (unless stripped). Image: Reddit. Let us know how it works for you. No experience with G, but I hear they run great suppressed as well, supposedly tuned very well. DANIEL DEFENSE DDM4 MK18 - $1,599.99. It may not display this or other websites correctly. daniel defense (in stock) - 5.0 (5) ddm4 v7 16in 5.56x45mm nato matte black 30+1rd. Very poor CS to put it mildly. I only have a windham(I live in Maine I had to) and armalite and psa. It however also includes a Daniel Defense 14.5 government profile cold hammer-forged barrel fitted with a Surefire SF4P four-prong flash hider. Awesome barrel definitely recommend! URGI is stand alone Mk16 military rail and milspec non- Geissele receiver. It is a Geisselle and Daniel Defense collaboration that is being released at SHOT 18. Listen Asshole why the fuck do you keep bringing up JSOC? All Rights Reserved. It may not display this or other websites correctly. For the best experience on our site, be sure to turn on Javascript in your browser. I should also add a disclaimer that I managed to shoot a barrel out at about 9k rounds using tula ammo. The AR-15 platforms commonality with the Pentagons M4 carbine means that technology developed for the armed services can quickly become available to the civilian world--and vice versa. (Photo from Geissele Facebook). I have mostly BCM uppers. If you use "its what assaulters are issued" for cans why are you using an A2 flash hider? The upper also includes a Geissele Airborne Charging Handle, Geissele Super Gas Block, and a Geissele Mk. All builds done on Aero Precision lowers with BCM A5 buffers. The so-called government profile adds thickness to the barrel and is designed to keep the weapon shooting longer than M4 carbine barrels in extended firefights without overheating. Its Ok. You are using an out of date browser. Lots of people. The uppers, known as Upper Receiver Group-Improved (URG-I) were reportedly destined for U.S. Army Rangers and Special Forces. Its very long but it goes into way more detail than this primer will. 180 Maple Ave W Vienna, VA 22180. Sign up and get exclusive access to promotions, sales events, pre-order sales & more! If you look at the history of the SD it was not really a premium rifle, just a rifle that the price was raised on to move it into the premium class. Even Daniel Defense is at it - this is their Mk18 sporting rifle: These improved parts have been specd specifically for USASOC which stands for US Army Special Operations Command. No issues thus far, though I wouldn't expect any decent rifle to have issues through 500 rounds in favorable conditions, so don't read too far into that. Though the pistol grip's ergonomics are less than ideal, this rifle more than makes up for that with QD mounts, a threaded barrel, and an improved muzzle brake. The very best resource for learning about the URG-I and how to clone it is this thread on AR15.com. Copyright 1996-2023 AR15.COM LLC. Get 10% Off - Subscribe to Our Email List, Toll-Free: +1-800-504-5897 That's exactly what I was getting at. All Rights Reserved. The SF4P can also hook up to a Surefire SOCOM 5.5. Geissele's URGIs retail with a handguard -- the MK 16 M-Lok Super Modular Rail -- tailor-made as per USASOC's operational specifications, that can host a variety of attachments and add-ons, including sights and optics on its upper Picatinny rail. May 23, 2021. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Full price Id buy something else. You May Also Like. For those not familiar, URGI stands for Upper Receiver Group Improved. As an added bonus, the Surefire SOCOM 4-prong flash hider comes as an option, perfectly timed and Rocksett into position. Barrels are available in lightweight or government contours, and M4 for the 14.5" length. Fast-Attach suppressor, though that doesnt come with either the Stripped or Complete models of the URGI. This is not to be confused with SURG, which is a separate programme: Current public URG-I reference pics show an array of improved parts, used to outfit existing M4A1 long (14.5 barrel) uppers. Never having fought inside structures, does that 1.5" really make enough difference to make it worthwhile to SBR all one's lowers or, alternatively, to deal with the pin/weld hassle? Barrel - Daniel Defense 14.5 mid length "GOV" profile with .076 gas port - P/N 07-077-07308 Gas block - Daniel Defense pinned gas block which comes on their rifles and URGs Gas tube - Daniel Defense mid length - P/N 04-013-18034 Hand guard - Geissele 13.5 MK16 in Desert Dirt Color- P/N 05-650S- NSN 1005-01-672-4794 and if DD is the actual barrel manufacturer or if that's just for the civilian model. January 26, 2023, by The major difference between the MK18 and Hk416 is the gas system. It is lightweight even in the government profile. My issue is a near new HS NM trigger that has a weak hammer spring and gets misfires. Just curious if anyone has experience with the Geissele 16 inch super duty rifle vs. the Sig MCX Virtus Patrol and thoughts in terms of quality of construction, accuracy, ergonomics, etc. I haven't shot any of the former, but is that inch and a half worth it? The rifle lacks an optic or even backup optics, but the full-length Picatinny rail will accommodate any sort of weapon sight, from rifle scope to a red dot or prismatic sight. I don't want it all. The company calls the civilian URG-I a near clone of the military version, but the only obvious difference between the two is that flash hider on the civilian upper is pinned and welded in place to comply with federal regulations mandating a minimum sixteen-inch barrel. Fax: +1-866-534-3097 By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. I have a V7, V7slw, mk18 and had a M4A1, would buy a G. All top notch. What are your thoughts on them? I have had several MLOK mounts come off the rail, even with Locktite. . Filter Show In-Stock Products Only 14 items DELTA 5 24" 6.5 Creedmoor, 1:8", HPALMA $617.00 24" View DELTA 5 20" .308 Win, 1:10", HPALMA $590.00 20" View 18" 5.56mm, Mid-length, 1:7, S2W Starting at: $328.00 The Daniel Defense barrel should offer greater accuracy over a standard Army issue rifle barrel, likely minute of angle or better. From my research so far, it seems that DD is more of a known quantity when it comes to barrel and bolt life versus the G. The G on the other hand will almost certainly have nicer controls when it comes to triggers and whatnot, and the furniture is much less controversial. This Item has been relisted. The barrel is really the only thing it has going for it. Ive seen a few threads on the new Geissele Super Duty 16, but not much info on them. One is in year one or two on the commercial market, and the other is NOT. It indicates, "Click to perform a search". Barrels. Trigger is nice. You are using an out of date browser. I have shot 62 GN M855 and Hornady 75 GN HPBT Hand loads. This is a particular Army command and therefore does not span the whole of SOCOM. If people are not attaching lasers or any other optical items to their rail then i make perfect sense to use a ultra light rail or even think if a rail is needed. I have an upper and a complete rifle. If running a suppressor, both are great candidates, DD runs smaller than typical ports. Get whichever you can for the best price and actually shoot it to ensure reliability. Also, its a DD bbl. I know the DDM4V series are proven/tested, and their CHF barrels are top of the class, but the Geissele Super Duty is tempting at this current price. The SF4P muzzle device is indeed permanently attached, so that the overall barrel length meets the minimum 16 regulation put forth by the Bureau of Alcohol, Tobacco and Firearms also meaning that you dont need to jump through any hoops to get your hands on this sweet upper. However, instead of being mated to an M4 carbine, it's designed to be used with civilian semi-automatic AR-15-type rifles, though still offering considerable improvements over the standard upper receivers most base AR builds come with today. Read the thread posted above. . The USASOC URGI is a near-clone of the upper receiver group currently in service with USASOC. Yes A Mid Length Gas System! Daniel Defense Rifle Barrel Assembly, 5.56mm NATO, 1:7 Twist, GOV/MID 07-077-19125-018 Finish: Heavy Phosphate, Caliber: 5.56x45mm NATO, w/ Free Shipping 5.0 rating with 4 reviews review & rate 16 Questions & 16 Answers Daniel Defense 0707719125018 14.5 Barrel .223 Rem/5.56 NATO

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