Brn AR-15 Colt Upper Build Kit, 5.56mm, 16" Bbl

Name: Brn AR-15 Colt Upper Build Kit, 5.56mm, 16" Bbl
Brand: Brownells
Availability: OutOfStock

Brownells · Upper Receiver

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Best price

$910.99at Brownells

Out of stock checked Oct 1, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$910.99checked 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	$910.99	$910.99	$910.99

Since Sep 28, 2026.

About this part

The Brn AR-15 Colt Upper Build Kit, 5.56mm, 16" Bbl is a 16" 5.56 / .223 upper receiver from Brownells. One store lists it, Brownells at $910.99.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Barrel length: 16" · Handguards

Specifications

Manufacturer: Brownells
Platform: AR-15
Caliber: 5.56 mm NATO

From the manufacturer

Add the Colt legend of reliability to your rifle or build with these complete feature 1/7 RH twist in a chrome lined, button rifled barrel. The Brownells M16 5.56 Complete Bolt Carrier Group is designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington. The Brownells M16 5.56 Complete Bolt Carrier Group is constructed with a bolt made from 9310 steel, which is finished with a heat treatment and shot peening. The carrier is fabricated from 8620 hardened steel. Each element of the bolt-carrier group is finished in a black-nitride coating. The Brownells M16 5.56 Complete Bolt Carrier Group comes with a bolt, bolt carrier, Mfg: Brownells