Radical Firearms 5.56 Barrel 1:7 Carbine Length M4 - 10.5"

Manufactured by Radical Firearms
SKU: B10.5CV556M4-17
MPN: B10.5CV556M4-17
Manufactured by Radical Firearms
11 Reviews

Out of Stock

NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.



NOTE: The National Firearms Act regulates the configurations of some firearms assembled with barrels under 16โ€ long. This barrel is intended for use in AR-15 pistols or legal short-barreled rifles. Other configurations may violate Federal law.

Radical Firearms produces quality precision made barrels perfect for your next build or replacing an old barrel. Machined from 41V50 chrome moly vanadium steel and finished with a corrosion resistant salt bath nitride. This exceptionally durable barrel has a bore that is harder than traditional chrome lining without the accuracy robbing side effects.

This 10.5" barrel is perfect for your next AR pistol or registered SBR build! Chambered for the 5.56 NATO cartridge, with a button rifled 1:7 twist rate, this barrel will yield superior performance throughout the full range of .223/5.56 ammunition, including the legendary 77 grain open tip match.
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Barrel CoatingSalt Bath Nitride
Barrel ContourM4
Barrel Length10.5
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthCarbine
Manufacturer.Radical Firearms
Thread Pattern1/2 X 28
Twist Rate1:7

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

11 reviews

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A pleasant surprise


I decided to take a chance and get this barrel for my SBR build. It seems almost too cheap to be any good, but if it isn't, I'd only be out the $95 and shipping. No big deal.
<br>As always, shipping was quick and everything was nicely packed. I cleaned the barrel of factory debris and lube and inspected it very closely with a bore scope. The chamber is very nicely machined, the rifling lands look fantastic, as well as the rest of the rifling.
<br>This is a very good barrel and I will be purchasing another for my next SBR/pistol build.
<br>I'll be sure to update when this build is complete and I've put some rounds down range.

excellent for an inexpensive barrel


Got to shoot a few hundred rounds through this and I was very impressed. Even with a garbage trigger (Anderson stainless trigger), 1.5" groups with a red dot at 50 yards for me, with an astigmatism, is about as good as it gets. Accuracy as good as my Ballistic Advantage 16" barrel with a better trigger.

Awesome barrel

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This barrel works flawlessly. It has a great finish and is accurate.

Radical FA 10.5โ€ barrel - good to go๐Ÿ‘๐Ÿป

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I usually buy high end barrels bc I like the bullet to hit in the same place on a regular basis- usually Noveske. I bought the 10.5โ€- it has nothing I can complain about. For the money, itโ€™s a good barrel. Iโ€™m a bit of a parts snob, so thatโ€™s actually saying a lot.

Fantastic Deal

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I ordered this for a duty gun build and it did not disappoint. with only a non magnified red dot, i had no problems putting 5 shot groups inside a 2.5 inch circle at 100 yards. This was with a 5-6 lb trigger and shooting with no rest, just proned out at a pretty fast shot cadence for this distance with high, gusty winds. I have no doubt that this barrel would produce sub-moa performance with proper shooting conditions, trigger and optic. Barrel is a little heavy for its length, but a small price to pay for this performance and price point.

Good to go on my AR Pistol

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Bought this barrel for my ar pistol as the rosco barrels were sold out so i went with the radical barrel instead. Went to zero it the other day and only took minor adjustments. Average group i got was about 1.5 inch from 5 shot groups. I will get about 3 rounds less than an inch and the other two will bring it out to 1.5inch i was also using cheap federal .223 from walmart so im sure with the right ammo youll get sub moa with a 5 round shot group. So far so good havent had any hiccups also did a mag dump to see if its running reliably. It is a little overgas not sure if its the gas block or barrel. But if youre on the fence of buying this barrel you cant go wrong for less than 90$. I would compare it to the PSA 10.5 nitride barrels as i do own one.

Good for now.

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Good product from what I can tell, not tried it on the range yet waiting for a gas block since this barrel have no holes for the pin. It would have to be a clamp on gas block or screw on at the bottom. But so far Iโ€™m happy with it. Although I wish it has a hole for the pin so I can use a standard A1/A2 front sights.

Pleasantly suprised

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This pistol build turned out excellent. Barrel is within spec, and accuracy is excellent. I did have to upgrade my extractor spring for 100% reliability. Very pleased.

highly recommended

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Caught this on sale and took a chance. Really nice fnish and very accurate. Looks and shoots great. I would highly recommend for a pistol build.

Unbelievable results

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Installed the 2.5 Primary Arms prism scope on my pistol length AR with this barrel and took it to the range today. After around 18 rounds, I was hitting steel targets at 300 and then 400 yards with a 10.5" barrel. Wow! Unbelievable results!

Excellent Accurate, Always Fast Shipping !!

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Excellent Product, Nice Finish, Took Optics From A Thousand Yard 20 In Barrel Gun , Put On This Shot 1000 Yards Only 6 inchs Lower