FM Products
FM Products Glock Style 9mm Bolt Carrier Assembly
4340 steel, salt bath nitride 9mm bolt carrier assembly for Glock-pattern AR9 builds.
Quick Specs
- Price
- $98
- Weight
- 1 lb
- Brand
- FM Products
- Category
- bcg
Features
- •9mm bolt carrier assembly
- •4340 steel carrier
- •Salt bath nitride finish
- •S7 tool steel extractor and firing pin
- •16 oz
Capability Boosts
Recommended For
+11 more
Compatibility Tags
Overview
The FM Products Glock Style 9mm Bolt Carrier Assembly uses a pre-hardened 4340 steel carrier with a salt bath nitride finish. It has an M16 carrier profile, a staked gas key, and a ramp that accommodates both MIL-SPEC and 9mm hammers. The extractor is forged and then machined from S7 tool steel. The S7 tool steel firing pin has a nickel boron coating. The assembly weighs 16 ounces and is made in the USA. It is cut for Glock-pattern magazines only.
In an August 2026 bench test, Foxtrot Mike bolts made from 2024 through mid-2026 ran the Partisan Disruptor and Triggered Company LAT cassette FRTs without weight modification. That result applies to cassette systems only. Selector-style forced reset systems still require the internal weight to be notched or a pre-cut carrier.
Key Features
- Pre-hardened 4340 steel carrier
- Salt bath nitride finish
- M16 carrier profile with a staked gas key
- Ramped for MIL-SPEC and 9mm hammers
- S7 tool steel extractor and nickel-boron-coated S7 firing pin
- Glock-pattern magazine compatibility
- Passed an August 2026 cassette FRT bench test without weight modification
Pros
- +Ramped for both MIL-SPEC and 9mm hammers
- +S7 tool steel extractor and firing pin
- +Ran two cassette FRT designs without weight modification in an August 2026 bench test
Cons
- −Glock-pattern only and not compatible with Colt-magazine lowers
- −Selector-style forced reset systems still require a notched internal weight or a pre-cut carrier
Detailed Specifications
- caliber
- 9mm Luger
- type
- Glock-style 9mm bolt carrier assembly
- Material
- Pre-hardened 4340 steel carrier
- Finish
- Salt bath nitride
- weight
- 16 oz
- magazineCompatibility
- Glock-pattern magazines only
- carrierProfile
- M16
- gasKey
- Staked
- extractor
- Forged and machined S7 tool steel
- firingPin
- S7 tool steel with nickel boron coating
- hammerCompatibility
- MIL-SPEC and 9mm hammers
- countryOfOrigin
- USA
- manufacturerLocation
- Boise, Idaho
- manufacturer
- FM Products
- sku
- FM9-BCG
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Build Your Custom Configuration
Add the FM Products Glock Style 9mm Bolt Carrier Assembly to your build and see how it enhances your platform.