The Faxon Firearms AR-15 9mm Complete Bolt Carrier Group – Black Nitride (FF9MMBCGCNITRIDE / UPC: 816341022805) is a purpose-built, full-mass 9mm AR BCG engineered specifically for AR-15 pistol caliber carbines (PCCs). Whether you’re building a competition PCC, a defensive AR-9, or a range toy for cheap 9mm fun, this complete bolt is designed to run hard, stay smooth, and work with a wide range of 9mm AR platforms.
Often listed by dealers as the Faxon Firearms AR-15 9MM COMPLETE BOLT BLACK FF9MMBCGCNITRIDIDE, this unit is Faxon’s Gen 2 9mm PCC blowback full-mass bolt carrier group, finished in a slick, durable salt bath nitride and optimized for Glock- and Colt-style 9mm lowers.
Key Specs – Faxon 9mm AR-15 Complete Bolt Carrier Group
Manufacturer: Faxon Firearms
Model: Superfinished 9mm PCC Blowback Full-Mass BCG – Gen 2
Platform: AR-15 / AR-9 (9mm PCC)
Caliber: 9mm Luger
SKU / Part Number: FF9MMBCGCNITRIDE
UPC: 816341022805
Finish: Black salt bath nitride (“Superfinished”)
Carrier Material: MIL-SPEC 8620 steel, fully heat treated
Design: Full-mass blowback, complete BCG
Weight: ~14.9 oz (full-mass)
Compatibility: Glock® & Colt® style 9mm lowers, many MP5-mag lowers
Purpose-Built for 9mm AR-15 Pistol Caliber Carbines
This isn’t a modified .223 carrier – it’s a dedicated 9mm blowback BCG built from the ground up for PCC use:
Designed specifically for 9mm AR-15 PCCs and AR-9 builds.
Optimized for blowback operation with a full-mass profile to support reliable cycling when paired with the correct buffer and spring.
Ideal for competition PCC, USPSA, Steel Challenge, 2-Gun, and high-volume training or plinking.
If you’re serious about building a dependable 9mm AR, starting with a purpose-built BCG like this one is the way to go.
Full-Mass Blowback Design for Smooth, Reliable Cycling
The full-mass profile of this 9mm PCC bolt carrier group adds the reciprocating weight blowback systems need:
Full-mass carrier (~14.9 oz) helps smooth recoil impulse and supports consistent cycling across various loads when tuned with the right buffer system.
Includes a user-removable carrier weight, letting you fine-tune the system for JP Enterprises and similar PCC buffer setups or your preferred recoil feel.
Designed to handle hard use in match guns and training carbines without beating up the lower or buffer system when properly tuned.
For shooters who want a reliable, tunable 9mm AR, a full-mass, adjustable BCG is a big advantage.
Dual Glock® / Colt® Compatibility (Plus MP5 Lowers)
Faxon designed this Gen 2 BCG with broad lower receiver compatibility:
Dual-geometry design supports both Glock-pattern and Colt-pattern 9mm AR lowers, so you’re not locked into one style of magazine system.
Listed as compatible with many MP5 magazine lower receivers, giving you even more flexibility for custom PCC builds.
Works in most AR-9 style receivers built around standard AR-15 spec uppers (dust cover compatible).
If you’re running a Glock mag lower now but might move to Colt or MP5 mag lowers later, this BCG is a future-proof choice.
Superfinished Black Nitride – Durable, Slick, and Easy to Clean
The salt bath nitride finish on this BCG is more than just good-looking:
Corrosion-resistant finish that stands up to carbon, sweat, and poor weather better than many traditional coatings.
“Superfinished” nitride treatment creates a smooth, low-friction surface that wipes clean easily and helps the carrier glide in the upper.
Ideal for high-round-count PCCs, where frequent cleaning and reliability are critical.
For shooters who live at the range, that slick, durable finish pays off in less time scrubbing and more time shooting.
Upgraded Gen 2 Extractor, Firing Pin & Serviceability
Faxon’s Gen 2 9mm PCC BCG brings several meaningful upgrades over earlier designs:
AR-15 style pivoted and sprung extractor for strong, consistent extraction and easier servicing.
Standard firing pin cotter pin, making field-stripping and cleaning more familiar and straightforward for AR users.
Stronger firing pin to stand up to heavy use in blowback systems.
Carrier key design separates the key from the charging surface to reduce the chance of damage from aggressive charging handle use.
These improvements are all about long-term durability and easy maintenance—exactly what you want in a workhorse PCC.
M16 / Full-Auto & Dust Cover Compatible
Faxon builds this BCG with serious use in mind:
M16 (full-auto) compatible geometry, ready for legal full-auto or binary builds where allowed by law.
Dust cover compatible, so your AR-9 can use a standard ejection port cover like a 5.56 upper, helping keep debris out when not in use.
Even if you’re running semi-auto only, this BCG is built to the durability standards serious shooters expect.
Ramped Bottom – Works with Common AR Triggers
One of the most practical features of this BCG is the ramped bottom:
Allows use with many common AR-15 triggers, including popular single-stage and competition trigger groups.
Great for competitive shooters and plinkers who want to run their favorite trigger in a 9mm PCC without worrying about hammer wear or impact issues.
That ramped design helps your 9mm AR-15 feel and run more like your 5.56 guns, with the same trigger feel across platforms.
Built from Mil-Spec 8620 Steel for Hard Use
Durability starts with materials and heat treatment:
Carrier made from MIL-SPEC 8620 steel, fully heat treated for strength and longevity.
External M16-style extractor and robust internal components designed to handle the unique stresses of blowback 9mm systems.
Backed by Faxon’s lifetime guarantee against defects to the original purchaser.
Combined with the nitride finish, this gives you a BCG that’s built to last through years of matches, drills, and range sessions.
Ideal Uses for the Faxon 9mm Complete Bolt Carrier Group
This Faxon AR-15 9mm Complete Bolt – Black Nitride is a perfect fit if you’re:
Building a PCC competition rifle for USPSA, IDPA, Steel Challenge, or outlaw matches
Assembling a home-defense or truck AR-9 with Glock or Colt pattern magazines
Converting an AR-15 into a dedicated 9mm training gun to save on ammo
Upgrading from a budget 9mm BCG to something more reliable and tunable
With its full-mass design, nitride superfinish, Glock/Colt compatibility, and Gen 2 enhancements, it’s ready to anchor a serious 9mm AR build.
SEO-Friendly Quick Summary
Product Name: Faxon Firearms AR-15 9MM Complete Bolt Black, Nitride
Model: Gen 2 9mm PCC Blowback Full-Mass Bolt Carrier Group
Part Number: FF9MMBCGCNITRIDE (often listed as AR-15 9MM COMPLETE BOLT BLACK FF9MMBCGCNITRIDIDE)
UPC: 816341022805
Caliber: 9mm AR-15 / AR-9 PCC
Material: 8620 steel, fully heat treated
Finish: Black salt bath nitride, superfinished
Design: Full-mass blowback, user-removable weight, ramped bottom, complete BCG
Compatibility: Glock & Colt style 9mm lowers, many MP5 lowers, JP buffer systems; M16/full-auto and dust cover compatible
If you want a high-quality, Glock/Colt-compatible 9mm AR bolt carrier group that’s built for real-world PCC performance, the Faxon Firearms AR-15 9mm Complete Bolt Black FF9MMBCGCNITRIDE delivers the durability, smooth cycling, and broad compatibility serious shooters look for in a 9mm BCG.
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