M16 Phosphate Bolt Carrier Group MP/HPT C158

Best price

$119.99at Brownells

checked Sep 30, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$119.99checked Sep 30, 2026	Check store	Buy at Brownells

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The M16 Phosphate Bolt Carrier Group MP/HPT C158 is an AR-15 bolt carrier group from Brownells. One store lists it, Brownells at $119.99.

Complete M16 Bolt Carrier Group:

Fully assembled Bolt Carrier Group; including the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin
Every Bolt is High Pressure Tested (HPT) with a proof load
Following the High Pressure Test, every Bolt is Magnetic Particle Inspected (MPI)
Not stamped with HPT or MPI
The Bolt is machined from Carpenter 158 steel
Following machining, the Bolt is heat treated and shot peened
Installed extractor includes red o-ring with spring
M16 Bolt Carrier is machined from 8620 steel and hardened
Interior of Bolt Carrier Carrier Key & Bolt Carrier are chrome lined
M16 Bolt Carrier will function in semi-auto or full-auto AR-15/M16
Gas Key Screws are properly torqued and staked
Bolt and Bolt Carrier feature a matte black mil-spec finish