Brn AR-15/A1 5.56mm 20" 1-7 Twist Rifle Barrel Assembly

Name: Brn AR-15/A1 5.56mm 20" 1-7 Twist Rifle Barrel Assembly
Brand: Brownells
Availability: OutOfStock

Brownells · Barrels

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Best price

$239.99at Brownells

Out of stock Sale checked Oct 1, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$239.99Salechecked Oct 1, 2026	Out of stock	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Dashed line = out of stock. Tracking since Sep 28, 2026.

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Store	Latest	Lowest	Highest
Brownells	$239.99	$239.99	$239.99

Since Sep 28, 2026.

About this part

The Brn AR-15/A1 5.56mm 20" 1-7 Twist Rifle Barrel Assembly is a 2E+1" 5.56 / .223 barrel from Brownells with a rifle gas system. One store lists it, Brownells at $239.99.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Gas system: Rifle · Handguards
Muzzle thread: 1/2x28 · Muzzle devices
Barrel length: 2E+1" · Handguards

Specifications

Manufacturer: Brownells
Platform: AR-15
Caliber: 5.56 mm NATO
Gas system: Rifle
Barrel length: 20"
Thread pattern: ½ x 28

From the manufacturer

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 A 1/2-28 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! Mfg: Brownells