18" HBAR Rifle Barrel W/ Headspaced Bolt

Name: 18" HBAR Rifle Barrel W/ Headspaced Bolt
Brand: Criterion Barrels
Availability: InStock

Criterion Barrels · Barrels

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Best price

$349.99at Brownells

In stock checked Oct 1, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$349.99checked Oct 1, 2026	In 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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Lowest in-stock price in the last 30 days: $349.99 at Brownells. Dashed line = out of stock. Tracking since Sep 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Brownells	$349.99	$349.99	$349.99

Since Sep 27, 2026.

About this part

The 18" HBAR Rifle Barrel W/ Headspaced Bolt is an 18" AR-15 barrel from Criterion Barrels. One store lists it, Brownells at $349.99. The lowest in-stock price in the last 30 days was $349.99 at Brownells.

Fits and works with

Barrel length: 18" · Handguards

Specifications

Manufacturer: Criterion Barrels
Platform: AR-15
Barrel length: 18"

From the manufacturer

The Chrome Moly AR-15 HBAR contour barrels feature a gas port drilled for a .750 gas block. An indent is provided opposite the gas port to enable easy installation. Also included is an M4 barrel extension. These barrels accept muzzle devices with a 1/2x28 thread. Chambers are finished, but barrels should be headspaced and installed by a qualified gunsmith prior to use.

Include a headspaced BCM Bolt Assembly with your Criterion chrome-lined barrel. The BCM Bolt is MPI tested, includes tool steel machined extractor, BCM Extractor Spring and is shot peened for increased strength.