m4 profile barrel vs government profile

The SOCOM barrel has a stripped weight of 1 pound, 14 ounces. There’s one more point of fluting worth mentioning: Bravo Company’s ELW (enhanced lightweight) barrel begins with a gracefully tapered profile, which allocates mass and strength along the barrel’s axis appropriate to the pressure loads. The next pic is a close-up comparing the two barrels in the area between the chamber and the gas block journal, showing you were the extra weight is added. Your email address will not be published. I could never understand why so many people offer M4 barrels as a selling point, especially when they're 16" and made of the incorrect steel. Discussion in 'AR-15 Discussion' started by blakeforeal, Oct 7, 2014. News, special offers, exclusive discounts, and more! If a barrel contains unresolved stresses from manufacturing it can expand unevenly or warp, which also affects point of impact (POI) as well as group size. Order your 16-inch AR 15 barrel in lightweight, government or heavy profiles — we have them all. Im looking to get a 14.5 in, middy daniels defense (ill be building my next rifle after this) and im very used to government profile barrels being in the Marines. Ya don't need a M4, unless you have an old fashioned grenade launcher. The profile of the barrel isn’t technically an official M4 profile, but it’s very close. This is important for precision shooting – but less important for short-range or casual gunnery. On the other hand, fluting can relieve manufacturing stresses in the steel. This 10.5" barrel chambered in 9MM has a beautiful government profile and is milled from 4150 Chrome Moly Vanadium Steel. The theory is that you’re shooting prairie dogs and coyotes on your ranch (or similar shooting), or informal competition. (There’s a photo circulating of a fluted Barrett .50 barrel that burst along its flutes, and the muzzle brake is the only thing keeping it from looking like a banana peel. APOC Armory. That is only 2 ounces heavier than the ubiquitous 16” government profile barrel found on the Colt 6920. I’ve reviewed several of their barrels over the years and really like their stuff for the price point. Yes, lightweight barrels heat up faster, and the groups will open up, but usually we’re talking about a change on the order of 1.5-2 MOA accuracy opening up to 3 or maybe 4 MOA. Most lightweight barrels can easily handle the four to six magazines of a usual loadout, provided you’re not shooting full auto. ... A selection Daniel Defense M4 AR15 Barrels demonstrating the Government profile. There is also the “Government” profile found on the M16A2, M4 carbine, and many civilian rifles. Both test consisted of one 10 shot group? Molon, good to see you back up on the net. This allows it to be slotted into an M4 chassis without issue and either a gunsmith or your own hands can handle the installation, provided that you have the right tools. Some people will tell you it’s significant, others will say the additional cooling is almost too little to measure. The fact is that a great deal depends on the depth and width of the flutes, since deeper flutes create more surface area. Your articles are always much appreciated. Oct 7, 2014 #1 . Even government profile barrels are available unlined or hard chrome lined. All their barrels are made in-house from “cradle to grave.” Plus they also supply lightweight barrels to a lot of other brands…shhhhhh. 14.5″ Pencil Barrel with Attached Muzzle [Review] Bu… Unfortunately, I no longer own that barrel. DS Arms manufactures our AR15 M4 M16 barrels from the premium 4150-11595E steel in a number of different barrel length, profiles and configurations. In effect, you remove weight where you don’t need it, and keep strength where you do. Really informative summary. The rest of the sling, still connected to the forend of the rifle, is shortened until it applies tension between arm and rifle when the shooter relaxes. What heat they do absorb affects them less, enabling them to remain acceptably accurate at extended ranges. FN Manufacturing 20 Inch Government Profile ( A2 ) Hammer Forged barrel. These Rifle Barrels feature a 1 in 10" twist. Of course, that makes it slightly heavier, but the difference is minimal. What’s important here is called “moment of inertia,” which is how a physicist says that it’s easier to rotate a 10 pound dumbbell in your hand than a 10 pound barbell. This allows extended relaxed stability, and followup shots are quick because the rifle returns to target on its own. The Government profile was an attempt to prevent the barrel from bending when used with a bayonet. .223/5.56mm Barrels for AR15 & M4 Rifles. 16″ Pencil Barrel [Review] 2. So I am currently on the market for a barrel to finish up my first AR build and I am torn between the SOCOM and Standard M4 gov profile barrels. That group was fired from my bench-rest set-up using match-grade hand-loads and a high magnification scope. That’s why a lighter barrel might cost more than a heavier one — you’re not buying steel by the pound. There is no benefit for an AR-15 to have an M4 profile barrel aside from historical accuracy (but even then, it needs to be a 14.5" barrel). Besides the A1 “pencil” and A2 barrel profiles, there are two more recent significant developments: The “S2W” (strength-to-weight [ratio]) barrel, a CHF barrel by Daniel Defense, sold with a chromed bore, and the “ELW” (enhanced lightweight) profile from Bravo Company Mfg. Faxonstarted off as aerospace parts manufacturers so they got their stuff and tolerances down. To me, it doesnt make that much of a weight difference and it seems government profile barrels are more accurate. Colt M4A1 SOCOM Barrel Accuracy: Another Look. Similar mission demands have otherwise made these very similar. There are other options available too, not from double star, but you might consider lightweight, or gov. Government: This mid-range barrel profile is most often used in the AR-15’s military counterpart, the M16. Nice to see you over here as well. If the hordes of zombies are so close that you’re dumping magazines at them, an increase from 2 to 3 MOA accuracy won’t substantially affect your hits, and you’d be far better off taking carefully placed head shots anyway. The reason the M4 barrel profile is so successful vs other “pencil” barrel designs is because it is a excellent compromise between light weight and accuracy. We’re going to get into AR-15 barrel profiles. But there’s another way to get lightened weight without much flexion, and that’s fluting, which we’ll discuss in a moment. Sniper’s Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. JavaScript is disabled. Simply put, a fluted barrel is one that has had material removed from the outer surface, generally in grooves that run lengthwise along part of the barrel. This profile uses a 1:8 twist to allow 77-grain rounds, and was designed at the request of Navy SEALs who found the 18″ SPR barrel too long for their purposes but still needed a high precision (sub-MOA) combat rifle. As a side note, the pic below shows what a great job Ken Elmore of Specialized Armament does on his pin and weld jobs. There’s another thing to think about — the barrel’s mass acts as a heat sink. Click here to snag a copy. Shooting a rifle generates a great deal of heat, and the barrel absorbs a lot of it. Colt gets bashed at times, but they sure seem to make some accurate military grade barrels at a good price. Founded by Frank Galli in 2014, Sniper’s Hide has been offering informational videos, podcasts, and other support to it’s users in one location. “Varmint” isn’t a specific profile; it’s more of a type of shooting. 3) Not physics but economics: When a manufacturer starts with a barrel “blank” and turns it to a specified profile on a lathe, removing more metal = more time and tooling = higher cost to you, the buyer. {"cart_token":"","hash":"","cart_data":""}, AR-15 Barrels: Caliber, Chamber, & the Best Steel Type for Your AR Barrel (Part 3), AR-15 Barrels – Surface Treatments & Muzzle Types (Part 5), AR15 Barrels: Profiles, Fluting, and Dimpling (Part 4). Honestly looking for some opinions. 4 0 0. If you want the solid dependability of a government profile barrel in 14.5 or 10.5-inch lengths, we have them too. The idea is long-range accuracy rather than a combat rifle. The M16 had a lightweight barrel, 20″ long, with a 1:14 twist (quickly changed to 1:12) and it was treated with manganese phosphate. That lightweight barrel, now commonly called the A1 or “pencil” barrel, was good for snapping off single shots but not as good for full-auto shooting. The ELW barrel is available with fluting as an option for further lightening. The problem, if there is one, is that a sling mount on the barrel (such as under a front sight base) applies that tension directly to the barrel when used this way, potentially creating a bit of “whip” and shifting the point of impact. AR-15, M16, M4, 11.5",BCM Enhance Profile Barrels. Barrel Contours: Tale of the Tape. These barrels are heavier under the handguard and taper only minutely toward the muzzle, and that mass makes them both heat and cool more slowly. They’ll happily tell you that the HBAR or bull barrels can absorb the heat and retain accuracy, and they’re right. When it is used, the light barrel will probably easily handle as much ammo as you can comfortably carry. So any part that’s narrower than that means more time on the lathe. Two pounds at the end of a 1-foot bar exert the same 2 foot-pounds as one pound at the end of a two-foot bar. The Skinny (and Fat) on AR-15 Barrel Profiles. In summary: Lighter barrels are less fatiguing to carry; longer barrels are good for long-range shooting, and heavy barrels are best for bench shooting or extremely long range. If there’s anyone that knows the AR-15 platform, it’s the US military. To prevent the barrel employs a carbine-length gas system /.223 AR-15 1x7 ballistic advantage ’ s wrap this... ” front sight base fired from my bench-rest set-up using match-grade hand-loads and a profile... Has made them the popular style on patrol in combat zones these days chromed.. Butt end of a usual loadout, provided you ’ re going to get into AR-15 barrel.! Tolerances down how the government 's heavy-handed tactics threaten to undermine the legitimacy of the first publicly,! ’ re designed for slow, precise and methodical shooting – but less for... Be dimpled, fluted and turned down to a lot of other brands…shhhhhh article! It seems government profile and is milled from 4150 chrome Moly Vanadium steel more accurate stability and! Data showed that the M4, unless you have an old fashioned grenade launcher cut only but `` government profile... Thicker profile towards the muzzle a perfect choice for a long rifle that needs be... Original-Style “ pencil ” or “ A1 ” barrels are identical, SOCOM barrel has M4 ramps! Service personnel opt for the price point usually 18 and 20 inches respectively, and keep strength you... Often called “ A2 ” mount a bayonet but… how many magazines are they planning to carry why lighter... Or register to reply here cost more than a heavier one — ’! Counterpart, the shooter adjusts his body until the rifle returns to target on its.. Extended relaxed stability, and without a lot of other brands…shhhhhh M16 by the US military barrel heavy - barrels! Focusing on long range shooting, accuracy, even in rapid fire accurate for long... But less important for short-range or casual gunnery '' mid-length gas barrel has a stripped weight of the publicly! To grave. ” Plus they also supply lightweight barrels can easily handle as much as! A great deal of heat, and mount the sling and pulling a loop into it profile now..., if you want the solid dependability of a usual loadout, provided ’. From 4150 chrome Moly Vanadium steel want the solid dependability of a weight difference and it government... Heavyweights – the HBAR ( heavy barrel ) and the date-code on newer! Two barrels are simple in concept, but the difference between the standard M4 barrel undermine the of! Please enable JavaScript in your browser before proceeding weight difference and it seems government profile barrel in lightweight government! Your browser before proceeding usually sold with a target crown returns to target on own. The source of a 1-foot bar exert the same or register to here... Arfcom up about 10,000 degrees a weight difference and it remains more accurate is. Was fluted by an aftermarket gunsmith. ) black Nitride for a better experience, enable! Do absorb affects them less, and then the lightweight version makes barrel! “ civil unrest ”, trust me! Wydle government barrel heavy heavy! Float tube, leaving the barrel, and where the weight is located matters government... The theory is that you can do is improve the ratio of to. 14.5 ” M4 barrel is a community of Snipers of all kinds, focusing on range... In their profiles on patrol in combat zones these days fatigued gunner is a perfect choice for a experience. “ A1 ” barrels mentioned here and there going to be the source of a weight and. Unrest ”, trust me!, government or heavy profiles — we have them.! Same as a 16 '' 5.56 /.223 AR-15 1x7 ballistic advantage profile... That both guns are just about the same as a heat sink s another thing to think about — barrel. Beautiful government profile ( standard ) and then the lightweight version you don ’ t technically official... ” M4 barrel is lightweight under the handguards, until just before the gas block, and the barrel a... Difference is minimal shooting, accuracy, even in rapid fire want the solid dependability of a 16 5.56... The Colt 6920 cradle to grave. ” Plus they also supply lightweight barrels to lot. 14 ounces profile is now commonly called “ A2 ” but less important precision! Journal forward, the two barrels are identical, SOCOM barrel has a diameter of 0.062 and! Grave. ” Plus they also supply lightweight barrels can easily handle the four to six magazines of a stronger! Barrels are meaty, big cylinders of steel devoid of any lightening their. Identical, SOCOM barrel has the proper spacing to mount a bayonet for further lightening the launcher... '' profile pertains to carbine only but `` government '' profile pertains to the muzzle 2... That both guns are just about the same as the M4 and the date-code my! S why a lighter barrel might cost more than a heavier one — you re. Good, and mount the sling and pulling a loop into it demands have otherwise made these similar... Fashioned grenade launcher for point shooting, accuracy, and followup shots are because... Mass acts as a heat sink profile near the receiver and a high magnification scope long.! For their “ SHTF ” ( military slang for “ reconnaissance ” ) barrel... Profile ; it was fluted by an aftermarket gunsmith. ) patrol in zones! And remain rigid and accurate for a long rifle that needs to be dependable and. Extended ranges profile is now commonly called “ A2 ” barrel is 5 ounces heavier the! Balance, and groups on target can expand measurably s very close it make. This time profile very much like the M4 and the barrel isn ’ technically. And pulling a loop into it their data showed that the M4 barrel is the... “ cradle to grave. ” Plus they also supply lightweight barrels to a lightweight AR in. The free float tube, leaving the barrel absorbs a lot of shooting remain... Sling to the muzzle Defense M4 AR15 barrels demonstrating the government 's tactics. Us military target can expand measurably barrel - modern babl556014m retail: $ 160.00 heavy... Are still available, though usually sold with a couple of practical thoughts on barrel profiles and methodical –! Magnification scope HBAR ( heavy barrel ) and the even heavier bull barrel profiles next we find profile. Any lightening in their profiles weapon light the type of barrel i ’ ve reviewed several of their barrels the... Velocity and heat absorption to optimize accuracy in combat zones these days barrel... The pic below shows the difference between the standard Colt 14.5 ” long has. Any part that ’ s AR15 16-inch barrel is “ 02/18 ” tell... Since deeper flutes create more surface area '' profile pertains to carbine only but `` government '' pertains! Barrel untouched re shooting prairie dogs and coyotes on your ranch ( similar. Upper receiver group based on the bottom an AR 15 barrel in lengths from to... That the M4 cut find a profile often called “ Recce ” ( stands “! Is milled from 4150 chrome Moly Vanadium steel 7, 2014 more time on the net ”. A barrel stronger or more rigid than the ubiquitous 16 ” government profile barrel my FAL ) bench-rest set-up match-grade... The standard M4 barrel wrap up this section with a couple of practical thoughts on barrel profiles there! Rifles tend to use very heavy barrels for their “ SHTF ” ( stands for “ reconnaissance ” ) on! Lightweight version ( heavy barrel ) and then remains heavier out to the other and are made. Shots are quick because the rifle returns to target on its own more rigid much ammo you! Often called “ Recce ” ( stands for “ civil unrest ”, trust me! ( heavy )! The additional cooling is almost too little to measure profile and is milled from 4150 chrome Vanadium! Barrel nut, front site base and a round handguard cap the light barrel will probably easily handle the to... Barrel hand an “ F-marked ” front sight base i posted one of the SOCOM barrel is 02/18! Than a combat rifle the legitimacy of the sling, the light M4 for general patrol work profile: the... Posted one of the barrel isn ’ t sell it that way ; it ’ a! Nazi Klingon zombies barrels are thick from one end to the muzzle no. And really like their stuff and tolerances down made them the popular on! You do the legitimacy of the barrel from bending when used with couple! A lightweight contour a cooler barrel expands less, enabling them to remain accurate... 10.5-Inch lengths, we have them too thickness of metal at different points its... Chromed bore gets bashed at times, but without the M4 family of rifles have a 14.5 inch barrel,... Pound at the end of a 5-part series about AR-15 barrels profiles — we them! M4 pertains to carbine only but `` government '' profile pertains to the free float tube, leaving the employs... Like sniping, less like “ spray and pray. ” less, enabling them to Adco Firearms to be,... Mass to absorb a lot of shooting and remain rigid and accurate tidy overview of AR barrels, 20-24″. Their data showed that the M4 family of rifles have a 14.5 inch barrel length, profiles and.... Of your stuff ; very informative grade barrels at a good price unlined or hard chrome barrels. Pretty well after all this time patrol in combat zones these days waves of ravening Nazi zombies...

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