The Faxon Firearms Match Barrel in .300 AAC Blackout, 9 inches, black nitride finish (brand part no. 15B38P9NGQ-5R-NP3) is machined from 416-R stainless steel for shooters building a mid-length 300 Blackout AR15 upper. Faxon cuts this barrel with a 1:8 twist rate, suited to standard-weight 300 Blackout supersonic loads, and applies the same 5R rifling and NP3 (Nickel Teflon) barrel extension used across its Match Series lineup. The black nitride finish protects the bore and exterior from corrosion while keeping the barrel running smoothly. It is a straightforward way to build a compact, accurate 300 Blackout upper on standard AR15 lower hardware.

Key Specifications

• Chambered in .300 AAC Blackout.
• Barrel length measures 9 inches.
• Rifling uses a 1:8 twist rate, suited to standard-weight 300 Blackout loads.
• Machined from 416-R stainless steel.
• Rifled with 5R rifling.
• Fitted with an NP3 (Nickel Teflon) barrel extension.
• Finished in black nitride for corrosion resistance.
• Part of Faxon’s Match barrel series.
• Built for the AR15 platform, drop-in compatible with mil-spec upper receivers.

Frequently Asked Questions

What twist rate does this barrel use? A 1:8 twist rate, suited to standard-weight 300 Blackout supersonic loads.

What is the barrel’s rifling and finish? 5R rifling with an NP3 barrel extension and a black nitride exterior finish.

Buy the Faxon Firearms Match Barrel

Build a compact, accurate 300 Blackout AR15 upper around a stainless Match Series barrel. Browse more Faxon Firearms parts in our AR15 barrels selection and order direct from our Lubbock, Texas gun shop for fast shipping to your door.