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Serious about firearms since 1939
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AR-15 M16A1 20" RETRO RIFLE BARREL 1-12 ASSEMBLY

5 Stars
(4.0) 32 reviews
AR-15 20" A1 Rifle Barrel 1-12 Twist Assembly
Brownells sku
100020999
MFR #
BABR5512999M
UPC
$239.99 $293.99
Coupon Code
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Specification
Item Length (Inches): 20.000
Barrel Contour: Lightweight
Gas Block Diameter: 0.625 Inches
Make Model Fit: AR-15.Universal
Cartridge: 5.56x45 NATO
Barrel Length: 20.00
Gas System Length: Rifle
Muzzle Threads: 1/2"x28
Color: Black
Twist: 1-12
Restriction
Description

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.

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