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The Brownells Retro A1 Barrel Assembly features a chrome-lined 5.56 NATO chamber, durable 4150 steel construction, and includes essential components for authentic builds.

BROWNELLS BRN AR-15/M16A1 RETRO CARBINE 5.56MM 11.5" 1-7 BBL ASSEMBLY

050806003774 078000461

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The Brownells Retro A1 Barrel Assembly features a chrome-lined 5.56 NATO chamber, durable 4150 steel construction, and includes essential components for authentic builds.

AR-15 M16A1 RETRO BARREL ASSEMBLIES - BRN AR-15/M16A1 RETRO CARBINE 5.56MM 11.5" 1-7 BBL ASSEMBLY

274.9 GBP 0 £274.90 *

Backorderable

Cartridge: 5.56 mm NATO Finish: Black Gas System Length: Carbine Length: 11.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 078000461

Backorderable

274.9 GBP 0 £274.90 *

The Brownells A1 Carbine Barrel Assembly features a durable 4150 chrome-moly steel construction, 5.56 NATO chamber, and includes essential components for retro builds.

AR-15 M16A1 RETRO BARREL ASSEMBLIES - BRN AR-15/A1 CARBINE 5.56MM 11.5" 1-12 TWIST BARREL ASSEMBLY

274.9 GBP 12 £274.90 *

In stock

Cartridge: 5.56 mm NATO Contour: Carbine Finish: Black Length: 11.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-12 Product no.: 078000377

In stock

274.9 GBP 12 £274.90 *

274.9 274.9 2 GBP

274.9 GBP £274.90

Prices inclusive of duty & VAT.

Product no.: 078000461

Mfr. No.: BABR557461M

050806003774 078000460 At 10.3" this is the shortest version of our A1 profile AR-15 barrel assembly. Matching the exterior contours of commonly used carbine barrels of the 1960s through the 2000s, it’s ready to lend an extra touch of authenticity to your next build. Or install one for extra weight savings on a lightweight AR-15 SBR, PDW, or pistol - following all NFA rules, of course! Like all our Brownells Retro A1 barrels, the 10.3" model is machined from hardened 4150 steel, then MPI inspected to detect hidden flaws (so we can pull it from the supply chain BEFORE it leaves the factory) and given a hard black phosphate finish. It’s chambered for the modern 5.56 NATO cartridge, with speedy 1-7" rifling in the nitride bore, so the 10.3" A1 Retro barrel plays nicely with current-production ammo. Ordnance-grade 4150 chrome-moly carbon steel Durable QPQ finish 5.56 NATO chambered with 1-7" twist rifling Uses CARBINE LENGTH gas tube .070" gas port All NFA rules apply Up front, the 10.3" Retro A1 barrel has ½-28" tpi muzzle threads, ready to accept a "retro" flash suppressor or modern muzzle device / sound suppressor, and on the other end a standard carbine barrel extension’s already installed. Also installed: a 625" gas block/front sight base (F marked) with bayonet lug, sight post, detent, spring, sling swivel, Delta ring, barrel nut, weld spring, snap ring, and round handguard cap. 078000461 & 078000377 The AR-15 is more than a half-century old, and the rifle and subsequent platforms have undergone a great deal of evolution. Now, aficionados of the system can build reproduction of early rifles with the Brownells A1 Carbine Barrel Assembly. The Brownells A1 Carbine Barrel Assembly is designed to be the ideal component of any XM177 rifle reproduction or any lightweight AR build, coming equipped with most of the materials necessary to complete a retro build. Barrel length: 11.5" (You are responsible for NFA compliance!) Twist rate: 1-7" or 1-12" Carbine-length gas system Threaded with 1/2"-28 TPI threads Chrome lined chamber and bore The Brownells A1 Carbine Barrel Assembly comes equipped with a front-sight base, .625"", no F marks, complete with sight post, detent, spring, sling swivel, rivet, flat Delta ring, barrel nut, weld spring, snap ring, and round handguard cap installed 078000462 & 100020996 The Brownell’s Retro A1 12.7" carbine length barrel assembly. Chambered in 5.56x45mm NATO, the chrome lined barrel is available with your choice of 1-7" or 1-12" rifling and finished in black phosphate with an overall length of 12.7”. Muzzle threads are ½""-28, and in back there's a standard barrel extension. Each Retro A1 12.7" carbine barrel assembly includes a front-sight base, .625", no F marks, complete with sight post, detent, spring, sling swivel, rivet, flat Delta ring, barrel nut, weld spring, snap ring, and round handguard cap installed. Machined from 4150 chrome moly steel. The barrel you need for your next Retro Rifle build! NOTE: These barrels do not have bayonet lugs. 100020999 The Brownells Retro A1 rifle length barrel replicates exactly the exterior contours of the original "skinny" barrel of the M16A1 rifle, so it's ideal for building your own Retro Rifle™ OR any AR-15 where a lightweight barrel is desirable. Chambered in 5.56x45, this chrome-lined barrel has a 1-12" twist and is finished in matte black phosphate, with an overall length of 20". The muzzle threads are ½"-28 tpi, and in the back a standard rifle barrel extension is pre-installed. 5.56 NATO chamber (also accepts .223 Rem) Original 1-12" rifling compatible with heavier bullets Chrome-lined bore Requires a rifle-length gas tube (available separately) Available as Stripped or complete Barrel Assembly This Brownells Retro A1 rifle barrel is machined from ultra-strong 4150 chrome-moly steel, and is magnetic particle inspected when finished to ensure there are no hidden flaws that could shorten its service life. 100021012 The Brownell’s Retro A1 rifle length barrel assembly. Chambered in 5.56x45, the chrome lined barrel has a 1-7 twist and finished in black phosphate with an overall length of 20”. Muzzle threads are ½-28 and features a standard rifle barrel extension. The assembly includes a front sight base, .625 No F Marks, sight post, detent, spring, sling swivel, rivet, flat delta ring, barrel nut, weld spring, snap ring, and triangular handguard cap. Everything you need for your Retro barrels!

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Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.

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Description Specification Customers reviews Accessories

BROWNELLS BRN AR-15/M16A1 RETRO CARBINE 5.56MM 11.5" 1-7 BBL ASSEMBLY

274.9 GBP £274.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Requires order by phone

Description:

A Critical Component of Any Retro AR-15 Build

The BROWNELLS BRN AR-15/M16A1 RETRO CARBINE 5.56MM 11.5" 1-7 BBL ASSEMBLY is designed for enthusiasts looking to create an authentic retro AR-15 experience.

Product Features:

Barrel Length: 11.5" (NFA compliance required)
Twist Rate: 1-7" or 1-12"
Carbine-length gas system
Threaded with 1/2"-28 TPI threads
Chrome lined chamber and bore

At 10.3", this assembly is the shortest version of our A1 profile AR-15 barrel, mirroring the exterior contours of carbine barrels used from the 1960s to the 2000s. It's perfect for adding authenticity to your next build or for weight savings on a lightweight AR-15 SBR, PDW, or pistol, while adhering to all NFA regulations.

Constructed from hardened 4150 steel and MPI inspected to ensure quality, the barrel boasts a hard black phosphate finish and is chambered for the modern 5.56 NATO cartridge. The rifling in the nitride bore is designed for compatibility with current production ammunition.

Included Components:

½-28" TPI muzzle threads for retro flash suppressor or modern muzzle device
Standard carbine barrel extension pre-installed
625" gas block/front sight base (F marked) with bayonet lug, sight post, detent, spring, sling swivel, Delta ring, barrel nut, weld spring, snap ring, and round handguard cap

The Brownells A1 Carbine Barrel Assembly is ideal for building reproductions of early rifles or any lightweight AR build, equipped with most necessary materials for a retro setup.

Note: These barrels do not have bayonet lugs.

Restrictions

Is a 'Call to order' product.

Top takeaways

The Brownells A1 Carbine Barrel Assembly is designed for XM177 rifle reproduction or lightweight AR builds, with a barrel length of 11.5 inches.
This assembly includes a front-sight base, sight post, detent, and other components necessary for a retro build.
It features a chrome-lined chamber and bore, with a 1-7" twist rate and is threaded with 1/2"-28 TPI threads for compatibility.

Attributes

Cartridge:
```
5.56 mm NATO
```
Contour: -
Finish:
```
Black
```
Gas System Length:
```
Carbine
```
Length:
```
11.5''
```
Muzzle Threads:
```
1/2-28
```
Twist:
```
1-7
```
Weapon type:
```
AR-15
```
Delivery weight: 0.723kg
Shipping height: 102mm
Shipping width: 51mm
Shipping length: 305mm
UPC: 050806003774

Item details

Made in USA
US export classification: 0A501.c

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Variations:

AR-15 M16A1 RETRO BARREL ASSEMBLIES - BRN AR-15/M16A1 RETRO CARBINE 5.56MM 11.5" 1-7 BBL ASSEMBLY

274.9 GBP 0 £274.90 *

Backorderable

Cartridge: 5.56 mm NATO Finish: Black Gas System Length: Carbine Length: 11.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-7 Product no.: 078000461

Backorderable

274.9 GBP 0 £274.90 *

AR-15 M16A1 RETRO BARREL ASSEMBLIES - BRN AR-15/A1 CARBINE 5.56MM 11.5" 1-12 TWIST BARREL ASSEMBLY

274.9 GBP 12 £274.90 *

In stock

Cartridge: 5.56 mm NATO Contour: Carbine Finish: Black Length: 11.5'' Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-12 Product no.: 078000377

In stock

274.9 GBP 12 £274.90 *

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