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The Brownells A1 20" rifle barrel assembly features a chrome lined 5.56x45 barrel with 1-7 twist, complete with essential components for your Retro build.

BROWNELLS BRN AR-15/A1 5.56MM 20" 1-7 TWIST RIFLE BARREL ASSEMBLY

050806029477 100021012

Restrictions

Is a 'Call to order' product.

Top takeaways

The Brownells AR-15 20" A1 Rifle Barrel is chambered in 5.56x45mm NATO with a 1-7 twist rate, ideal for stabilizing a wide range of bullet weights.
It features a complete assembly with a black phosphate finish, including front sight base, sling swivel, and handguard cap, ready for a Retro build.
The barrel has standard 1/2-28 muzzle threads, accommodating a variety of muzzle devices for customization.

Attributes

Cartridge:
```
5.56 mm NATO
```
Finish:
```
Black
```
Gas System Length:
```
Rifle
```
Length:
```
20''
```
Muzzle Threads:
```
1/2-28
```
Twist:
```
1-7
```
Weapon type:
```
AR-15
```
Delivery weight: 1.048kg
Shipping height: 102mm
Shipping width: 13mm
Shipping length: 533mm
UPC: 050806029477

Item details

Made in USA
US export classification: 0A501.c

Specifications:
Cartridge: 5.56 mm NATO
Finish: Black
Gas System Length: Rifle
Length: 20''
Make: AR-15
Muzzle Threads: 1/2-28
Twist: 1-7

339.9 339.9 1 GBP

339.9 GBP £339.90

Prices inclusive of duty & VAT.

Product no.: 100021012

Mfr. No.: BABR557012M

050806029477 Introducing 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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339.9 339.9 1 GBP

Description Specification Customers reviews Accessories

BROWNELLS BRN AR-15/A1 5.56MM 20" 1-7 TWIST RIFLE BARREL ASSEMBLY

339.9 GBP £339.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Requires order by phone

Description:

Discover the ultimate in retro rifle performance!

Introducing the Brownell’s Retro A1 rifle length barrel assembly, designed for enthusiasts who appreciate classic style and modern functionality.

Product Features:

Caliber: 5.56x45
Barrel Length: 20”
Twist Rate: 1-7
Finish: Black phosphate
Muzzle Threads: ½-28
Barrel Extension: Standard rifle barrel extension

The assembly includes:

Front sight base
.625 No F Marks
Sight post
Detent
Spring
Sling swivel
Rivet
Flat delta ring
Barrel nut
Weld spring
Snap ring
Triangular handguard cap

Everything you need for your Retro barrels is included, ensuring a seamless assembly process. Elevate your shooting experience with this exceptional barrel assembly from Brownells UK!

Restrictions

Is a 'Call to order' product.

Top takeaways

The Brownells AR-15 20" A1 Rifle Barrel is chambered in 5.56x45mm NATO with a 1-7 twist rate, ideal for stabilizing a wide range of bullet weights.
It features a complete assembly with a black phosphate finish, including front sight base, sling swivel, and handguard cap, ready for a Retro build.
The barrel has standard 1/2-28 muzzle threads, accommodating a variety of muzzle devices for customization.

Attributes

Cartridge:
```
5.56 mm NATO
```
Finish:
```
Black
```
Gas System Length:
```
Rifle
```
Length:
```
20''
```
Muzzle Threads:
```
1/2-28
```
Twist:
```
1-7
```
Weapon type:
```
AR-15
```
Delivery weight: 1.048kg
Shipping height: 102mm
Shipping width: 13mm
Shipping length: 533mm
UPC: 050806029477

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (4)

4.8 / 5

Definitely recommended

perfect 13/10/2018

round front sight post, perfect fit to receiver

Recommended

A few blemishes, and incorrect parts 02/08/2018

I like this barrel, it's chrome lined, it's a retro profile, and it's an updated 1/7 twist. Sturdy in construction and appearing fairly well made. But, mine has a few issues, and I want other buyers to know about them.

The first two are cosmetic, but concerning. The second two are personal preferences that dont matter too much.

1) The sling swivel rivet is in the wrong place.

(Picture 1)

It's not dead center on the Front Sight Base. I'm sure it will work fine for years, but it shows a lack of attention to detail.

2) There are copper deposits on the feed ramps.

(Picture 2, left lower feed ramp)

I don't know if this was a used return barrel, but there are clear indications a round was chambered with this barrel. Again, it's not enough to return it, but other buyers should know.

3) The front sight post is wrong.

Brownells uses a square 4 position post, instead of a retro round 5 position post. Ultimately this isn't the worst thing in the world, but it's a barrel for the retro line. I think some retro parts are called for.

4)The front sight base is wrong.

This is the least realistic of my concerns. The early E1 rifles (which weren't in a 1/7 twist anyway) had a very thin looking cast front sight base. This probably isn't something to realistically hope for, but it would have been a nice touch.

Definitely recommended

Nice barrel 19/12/2017

Well it's not original but better in my opinion. I did not care about 100% authentic so I went with this 1/7 twist version to get better accuracy and the cost savings over a NOS surplus barrel which seem to be running upwards of 400-500 bucks. Looks great, is a touch on the blacker shade of grey but not too noticeable. No range time yet as we are kicking off winter here but the barrel checks out good so far. Rifling and chamber are clean. The only con I have is the A2 sight post it comes with, swapped for an original A1 I had, Brownells also sells them new. So this barrel wraps up my A1 build on J-15 lower with a Philippine made Capco/Martin Marietta upper and surplus furniture. All in all the project turned out great. The A1 rifle is just sexy. I would have loaded a pic but site keeps erroring out.. sorry.

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