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Cut from 3/8″ thick steel, with plenty of metal so it won’t flex under pressure while transferring the torque evenly to the nut. Here’s the part where a bench vise must be used. The shims are awesome to keep your torque down to a level that does not break the upper. @98Z5V can confirm those numbers, or tell you I'm full of it, or both, Ok. I’ll go back to the bunker and work with those numbers. YHM-9483.     Wash. This AR-15 Build Tip is Installing Barrel Nut Properly! in 5 ft-lb increments, per the Army maintenance manual. This tool engages the barrel extension while you are torquing your barrel nut and/or muzzle device. When I do start on that upper again, I’ll not be using that handguard/barrel nut combo, but I’ll definitely be using the technique you layed out. You don’t think 35-ish is too little for a .308? Normally with tools I’m a “buy once, cry once” kind of guy. Ah............ just looked at your at photo, it looks like you have a Reaction Bar? Display as a link instead, × You then slide the upper receiver onto the reaction bar. ‍♂️, The rod is not a solid piece but, for some ungodly reason, has the splined end attached to the body of the rod via a coiled pin. Aero M5 Enhanced M-LOK Gen 2 Handguard and barrel nut. AR-10 308 Reaction Bar and Barrel Vise Block Rod Tool, Blue. Once you had it right, at the "pre-tighten" spot, you applied torque and lined it up - perfect torque every time. Paste as plain text instead, × SKU AV3. × If you get it set 35 or above, shoot it a bit, it ain’t going anywhere. PRI – AR-10 Barrel Nut Wrench. I was more interested in the non-marring claim of the tool than the (admittedly very low) price. Torque Values: Compensator (Flash hider) 15-20 Ft. Lbs. I agree with you on the fixture vs. reaction rod thing. Keeps the barrel extension firmly connected to the earth so that you can apply the torque necessary to get the job done. No problem happy to help. Replied by mrraley on topic Barrel nut torque spec? More Views. Now that we have Reactions Bars, it is the tool that should be used in lieu of the nylon upper receiver fixtures. Barely. In fact my first impression after reading the title lead me to believe the 308 AR Barrel Extension Torque Tool was for tightening the barrel extension to the barrel. This multi-use tool helps with ease of installation of barrel nuts without scratching the exterior. I got lucky in that it pushed out the ejection port side rather than inboard, so I could pound it back in to get the receiver off the tool and the pin didn’t gouge the interior. See more ideas about ar barrels, 308 ar, cool tools. Don't make to big a deal out of this.   View our 308 compatibility guide for more details. Howdy again, all. If more torque is better, then too much is perfect......Hope it helps. I'll post thr results on my other thread as not to thread jack ^-^. , Not the most intelligent design I’ve run across. Cheaper to replace a pin than the tool. Persistence has always gotten me there, sometimes after buying more shims to replace what I jacked up going on and off so many times. Powered by Invision Community. Not just the high side. Thanks @jtallen83. Leading you to replace the crushing washers. Any barrel nut should be torqued to 30 ft-lbs, loosened, torqued, loosened, torqued for the third time to 30 ft-lbs. 30~80lb/ft is the standard, and 30 ain't much - just put it on tight. That thing, by description, isn't even up to handling the torque range of tightening a barrel nut, which is 30ft/lbs~80ft/lbs. I'm going to assume you did use a suitable type of grease on the threads initially when you made several attempts to tighten the nut. We could just all mix and match our nuts until everybody is happy :banana: mine couldnt stand the 80 lbs of torque! I took a deep breath and walked away from the bench last night and promptly ordered a proper steel reaction rod. Then you can torque away at the barrel nut with the appropriate barrel nut wrench. ?Available for the 308 AR. NOTE: Will NOT fit the DPMS G2 versions. This multi-use tool helps with ease of installation of barrel nuts without scratching the exterior. I do despise the shim method of clocking, I usually end up ruining shims when I stack to many ,  but you dance with who ya brung. You can post now and register later. Head space information FOR 5.56. I didn't know that existed but I would think that would do fine for the contingency they are describing. We recommend using no more than 35 pounds of torque during installation. 5 Slide the Locking Ring into the Barrel Nut, making sure the alignment slot on the Locking Ring is vertical and facing upward. These tools are made to grip in a bench vise so that the rod is either vertical or horizontal. You could have a rifle with high torque on the nut, shim it, and still line up perfectly at lower torque.   Pasted as rich text. This multi-use tool helps with ease of installation of barrel nuts without scratching the exterior. Just be sure to grease them first so that the barrel nut can slide over them as it rotates. Minimum, not to exceed 80 Ft. Lbs. Knuckledragger, June 1, 2020 in General Discussion. But that’s another story. View Quote If you stay within barrel installation torque specs, there is zero chance of loosening a properly torqued barrel … I've found that it likes the 30-40 ft-lb range. Troy makes a AR-10-sized barrel nut with DPMS threads, for the DPMS upper receivers. Take your wrench and tighten the nut till the nut lines up to slip your gas tube through, you will have approx 45-60 ft lbs, Your Done. Who makes this rod? Tools. Crush washers do crush, but they're not gonna stand up to the heat that the chamber creates. !, and you cannot keep getting medieval with the Face Lapping tool. I also stumbled across Aero having M5E1 blem uppers on sale & ordered one of those, as well. Now that I understand when they would use loctite, I'm definitely going with a grease or anti-seize. Howard Roark, Sep 16, 2010 #2. rcmodel Member in memoriam. Mine was done at like 35 and after 100 rnds of frustration it came loose. If you are eager in writing reviews upon any of the Ar 308 Barrel Nut Torque you've buy and have experience with, we encourage you to attain fittingly to help others who are looking at buying the same products. Yes, I have a reaction bar, but I made the wrong choice and got an aluminum one because “Aluminum won’t mar your upper receiver like steel will”. This is where the term "seasoned" comes in, working the threads back and forth from very snug to lose 3-4 times prior to final tightening. Not dinging you in any way - just stating, the spec that they stated: .308 Barrel Vise Block Rod for .936” – AR-10 LR-308, Black. Anything over 45 ft lbs is fine. Apply torque to get within the range of 30-to 80 foot pounds while inserting a gas tube alignment pin from the front. Barrel Nut Wrench Use the Barrel Nut Wrench to securely tighten the Barrel Nut with enough tension (35 ft-lb). × Paste as plain text instead, × Handy tool aids in applying straight-line torque for fast, easy installation of the AR 308/AR-10 barrel nut without scratching the exterior of the upper receiver. I don't even know if my barrel but will be the type that has the gas tube run through it or not. AR-10/ 308 AR Barrel nut removal. Honestly, had it been made in one piece, it’d probably work just fine. SKU: AV3-B . No sanding possible for that one. A simple bubba fix is if you just cant get the nut to the next notch and have the torque value that you are comfortable with is to put down a piece of wet/dry sandpaper on a flat surface and put the nut on it and sand a thou or so off the nut...it will then get you to, where it needs to be....easy peasy :) Wash. its just cant be that hard to tighten down the barrel nut at a value from 40 to 80 pounds. I would think the aluminum Reaction Bar would be sufficiently strong enough to achieve the needed torque but maybe not, never having used one. hmmmm.....the barrel nut has been on the ar since like forever...why try to reinvent the wheel? Carbine: Tighten the castle nut to 40 INCH pounds +/- 2 inch pounds. I generally make sure I get past 35 ft lbs and then stop when it lines up, have to admit to not reading directions though, I just shoot for between 35 and 80.   Your previous content has been restored. My barrel finally came in today. They have just way to much flex in the design. 60 ft lbs of torque on the barrel nut will net very close to 300 ft lbs of clamping force, that for me is max. Supposedly 7075 for the tip and 6061for the body. 12″ in Length. Installing Barrel Nut properly is important in AR-15 building. Who knows what the correct torque for the barrel nut on an AR-15 is. Product Features. Funny how that keeps happening, ain’t it? Brownells 308 AR Barrel Extension Torque Tool The Brownells 308 AR Barrel Extension Torque Tool has a very misleading name. We have here on this forum a wealth of information, theres no reason to keep it a secret. Dimension: 1.75" Diameter x 1.25" Tall; Weight: 1.728 Oz. So the nose is aluminum, or the whole assembly is aluminum ? You don’t think 35-ish is too little for a .308? Copyright © 308AR.com 2019 Upload or insert images from URL. I've done tests on a few barrels with my rifles with barrel nut torque and accuracy. The theory makes sense, but in this case the body of the tool is extremely soft and the pin they chose to use is a coiled spring pin that is one hard mf’er. But if it is all you have use it. It is the core of your AR-15 build. Had a hole in the side of the box big enough for it to slide out, but it was in there alright. The DPMS claw needs to be placed very securely in the vise as it takes a fair amount of force to tighten the barrel nut the correct amount while maintaining proper alignment for the gas tube. Your Done. The shims are good stuff, though. Aside from getting additional shims, do I have any options here? Also a great way to securely hold your AR’s upper receiver assembly for maintenance and upgrades. Upload or insert images from URL. ?Available for the 308 AR. Ah............ just looked at your photo, it looks like you have a Reaction Bar? This was definitely not the best investment I’ve made in tools. On a side note, I know of another course and the one I teach use the same numbers for the M-15 series. And that's 35 to 80. The school of hard knocks is a good teacher, but sometimes expensive. You don't need a length of pipe to put it on. This can be dependent on what type of grease is used    And the Grease Debate will never end. Comes with carrying case/holder. Heavy-duty wrench provides plenty of leverage for installing and removing barrel nuts when used with a 3/8″ or ½” drive breaker bar, socket wrench, or torque wrench. If you have an account, sign in now to post with your account. Be the first to review this product.   Your link has been automatically embedded. Edited March 11, 2014 by 98Z5V. @Anderson3754 that is much appreciated, and I’ll take you up on it. SKU AV3. Really cool tool for working on your AR build. If I find someone who’s decent at TIGing aluminum, I might have them weld it up and then turn it on a lathe. The farm boy in me says, steel washers, no crush, tight fit, tighten to spec and be careful of anything that's a casting. I set the wrench at 35 then move up till it lines up, never had it hit right at 35 but I would be comfortable with it. I guess that’s where I’m at then. Installation and removal of the barrel nut is the highest torque operation on an AR-15/M16 M4, AR-10, 308 AR type rifle. LBS OF TORQUE TO INSTALL THE BARREL NUT. You could have a rifle with high torque on the nut, shim it, and still line up perfectly at lower torque. With having 4 positions on your barrel nut it is not that bad of a job. Tips are 7075 Aluminum and base is 6061. The threads are all ready "seasoned" from several attempts to torque the barrel nut. I'll just add some of my opinions. AR/LR 308 style rifles use several different barrel nut and handguard standards, depending on the make and model. The shims are good stuff, though. I'm trying to install my barrel and for the life of me, I can’t get the nut to line up at torque. .308 AR Technical ; Building a .308AR ; Tightening barrel nut Sign in to follow this . Here's an example of a set for an AR15. I’ve tried using the whole shim pack, none of them, and everything in between. Barrel Nut.  Before purchasing a handguard, please make sure you are purchasing the correct one. Carrier Key Screws - 35-40 INCH pounds. Yep it's called a trip to  Home Depot / Lowes. NOTE: Will NOT fit the DPMS G2 versions. . My NSR installs have been on the high side of the torque range as well. That's why you don't use a crush washer on a muzzle device that a suppressor attaches to. Especially being the .308 platform. Lower Receiver Extension (Buffer Tube) Rifle: 35-39 Ft. Lbs. Note that the aluminum barrel nut is significantly lighter than steel barrel nuts, however it may be subject to damage during installation. Specifications. The splines themselves look fine and not deformed at all. It can’t. Don't remember where I first saw that spec but pretty sure I learned it here. Does your 308 rifle use a DPMS LR-308 pattern barrel nut and handguard? Possibly there to fail before the aluminum? The lip on the barrel nut that mates up against the flange on the barrel. Seems to my inexpert opinion that a crush washer designed to crush, such as washers made from crushable aluminum and copper, will continue to crush after torquing when they're being slammed by shooting. I’m not comfortable torquing on an upper just supported by the pins. . I don’t particularly want to keep pushing the barrel nut out further, as I’m already going to hate the gap between the handguard and the upper receiver. Color anodized. Select your AR type Any A1 A2 A3 AR10 AR15 M-16 Rifle Carbine Pistol Pistol Caliber Carbine MBA-1 MBA-1 MBA-2 MBA-1 or MBA-2 Kit MBA-2 MBA-3 MBA-3 MBA-4 MBA-4 Semi-Auto Ultimate Rail-Pod only … Min 30 ft.lb. Closest I get is what you see in the pic. In this video, I discuss principle of torque and how that applies to barrel nut installations. The pin is deforming and pushing out, and at torque levels well below max for a barrel nut. Whole assembly is aluminum. Joined: May 15, 2007 Messages: 1,076 Location: Deep South. These replacement parts will work with all of our free float forearms. I don't know about that... Crush washers don't crush very evenly. Helps ensure the right amount of torque is evenly applied, while maintaining proper alignment of the barrel, upper receiver, and gas tube ports. I’ll get out to the shop and take some pics where I had to beat the thing to get my upper off it. As long as you can get it to 45 or a little more, get the gap lined up for the gas tube, you'll be good. The barrel nut used on this AR is from a UTG Pro rail. Quote ; Share this post. https://ar15discounts.com/products/presma-ar-10-barrel-vise-block-rod-black/. Should you go ever so slightly past your line up point for the gas tube, just back it off slightly till the gas tube lines up. If I remember that right...  Anyways, if it didn't, you added a shim, until you got it right. For this to be successfully accomplished, the upper receiver needs to be properly secured. EasyEJL, March 18, 2013 in Building a .308AR, EXACTLY or you have the same issue I did with my recent install. Alternate methods can be used: Place the torque handle in the padded vise and insert the tool vertically from the rear. If it will not go, the answer is the indexing shims. The other thing is when your ready to try again pm me, and we can get together on the phone for a few minutes to help make sure it comes out correct. Joined: Sep 17, 2007 Messages: 59,076 Location: Eastern KS. It’ll also twist like wet spaghetti, apparently. THAT IS NOT THE CASE. I'm sure there are 308AR ones available. Had I known that from the outset, I wouldn’t have bothered purchasing it. (We recommend using a torque wrench to achieve proper tension). I don't use a torque wrench to do the tightening, I use a standard wrench applicable to the style of nut being tightened, then when done, I use the torque wrench to see what ft lbs torque I have applied, if I have a strong need to know what the torque value is. If I remember correctly, we maxed that rail at like 80 or 85. Step 5 – Torque AR-10, AR-308 Barrel Nut and Align Gas Tube. its just cant be that hard to tighten down the barrel nut at a value from 40 to 80 pounds. All Monstrum Tactical LR-308 Quad Rail Handguard products are backed with a lifetime warranty. Got a picture of this thing, or a link to where you got it from? The splines on the front of the rod enter the into barrel extension for a secure hold and fit. Howard Roark Member. In a short time, I’ll have the correct tool for the job, a better upper and more forgiving barrel nut to work with, no more damn gap between the handguard & receiver, and oh-gee-darn... a spare upper receiver that’ll undoubtedly morph into a 6.5 CM setup and eventually another complete rifle. Really cool tool for working on your AR build. $33.50. Just another learning experience. So. Really cool tool for working on your AR build. to get it to align with the gas tube hole. I still have some of those shims left over for a 5.56 gun, and I've thought about using them on builds after that...  but I just torqued those on and went with it. A simple bubba fix is if you just cant get the nut to the next notch and have the torque value that you are comfortable with is to put down a piece of wet/dry sandpaper on a flat surface and put the nut on it and sand a thou or so off the nut...it will then get you to, where it needs to be....easy peasy :) Wash. Can't do that - the interference surface is on the inside. Redone to 80 and wnd Ill be at the range this weekend. If you have an account, sign in now to post with your account. "Sometimes it is impossible to hit the required minimum torque, specification of 35lbs-ft and still have the gas tube hole line up with, Anti-seize is an alternative, however, it acts as a lubricant and the, amount of torque required dry, differs from amount needed for "wet", applications. Feb 4, 2019 - Explore frances's board "308 ar" on Pinterest. Lesson learned. By Usually you will need more torque under "lubricated". September 2, 2018 Bill Marr Gunsmithing 0.   Pasted as rich text. to align the next slot in the barrel nut. lencac, Sep 16, 2010 #1. - max 80 ft.lb. I usually never reach that high. Will handle 70+ ft lbs of torque. I believe you should have no problem with the numbers I recommended. Slide the barrel through the wrench, insert the Torque Tool in the back of the receiver until the teeth lock into the locking lugs in the barrel extension, and apply torque with the torque drive through the Tool to tighten the barrel nut. I think it’s a combination of questionable design, inferior material and/or heat treating on the tool body and a poor choice in the coiled spring pin. Precision machined from heavy-duty steel bar stock for years of reliable service. In theory, maybe. THAT IS NOT THE CASE. Yup, and later when I sold that rail to Ryan it came out to 75-80 on his too. Your receiver threads are aluminum, not hard to over stretch (distort) them. The rod is not a solid piece but, for some ungodly reason, has the splined end attached to the body of the rod via a coiled pin. 308 AR Barrel Extension Torque Tool. This Upper Assembly Tool makes barrel and muzzle device installation super easy. × No info on heat treating. Then tighten your barrel nut till your gas tube slides in. Armalite's is 1/2" only. Also if past one of the lineup holes in the barrel nut you can add a shim to get your barrel nut back before lineup, or use a receiver facing tool  and you lap a few more thousands off of the receiver face. Proudly Made in the U.S.A. You may also be interested in the following product(s) YHM-9621 Forearm Wrench . You want something close to 45-50 degrees before tight.   You cannot paste images directly. Clear editor. Plus it's half the price of the Armalite Barrel nut wrench, and can be used with 3/8" or 1/2" torque wrenches. Note: Max. Even Noveske on the NSR Rail, states to use a grease on the barrel nut threads and you may need to tighten loosen.Thier brand specific Torque specs are 40-80 lbs. Agreed @98Z5V. Also a great way to securely hold your AR’s upper receiver assembly for maintenance and upgrades. Precision machined from heavy-duty steel bar stock for years of reliable service. @Anderson3754 thanks for the info. Slide the barrel through the wrench, insert the Torque Tool in the back of the receiver until the teeth lock into the locking lugs in the barrel extension, and apply torque with the torque drive through the Tool to tighten the barrel nut. Display as a link instead, × Barrel Nut - 30 Ft. lbs. If using anti-seize compound reduce torque to avoid over torque of the receiver/barrel nut. Add to Cart. I do not like going over 60 ft lbs of final torque. Link to post Share on other sites. Thankfully not an expensive lesson. Out Of Stock. × The pin deformed and pushed out to where I had to get one of my largest pin punches and beat it flat enough to slide the receiver off. It is … So what I do, is set my torque wrench to 30 ft-lbs, and if my barrel nut is not aligned, I will set the wrench to about 60ft-lbs, then keep tightening until the gas tube aligns. I'm starting to think a replaceable crush washer (aluminum or copper) would probably be better. Barrel Extension Torque Tool For 308 AR DPMS Based Barrel Extensions The Brownells 308 AR Barrel Extension Torque Tool has a very misleading name. Clear editor. Does that barrel nut only have one slot in it for the gas tube? If alignment issues did occur I guess loctite or a shim would take care of it. Also a great way to securely hold your AR's upper receiver assembly for maintenance and upgrades. I’m probably overly cautious, but I break less poop that way. By Now, when you hand tighten and your just past a lineup hole on the nut, add like a .010 shim and that will put you around 45 degrees before tight. .308 Barrel Vise Block Rod for .936” – AR-10 LR-308, Black. You clocked your barrel nut and checked it's gas tube position without a shim - the hole had to line up about 45-degrees out from top dead center, before tightening. You can post now and register later. Ready for tuning, it’s that simple.

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