Geissele Reliability Enhanced Bolt Carrier Group (Nanoweapon)
Chrome-nitride C158 bolt and 8620 M16 carrier with an H13 cam pin, HPT, and MPI.
- Price
- $393
- Brand
- Geissele Automatics
- Category
- Bolt Carrier Groups
Featured in
Features
- •Carpenter 158 steel bolt
- •8620 steel M16-profile carrier
- •Nanoweapon chrome nitride finish
- •H13 tool steel cam pin
- •5.56 NATO, HPT and MPI
Capability Boosts
Recommended For
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Overview
The Geissele Reliability Enhanced Bolt Carrier Group is the chrome-nitride answer for a buyer comparing carrier finishes. Geissele applies its Nanoweapon chrome nitride to both the bolt and the carrier, a hard, slick, corrosion-resistant ceramic finish rather than the phosphate most duty carriers ship with.
The bolt is Carpenter 158 steel, and the M16-profile, full-auto-rated carrier is 8620 steel. Geissele pairs those parts with an H13 tool steel cam pin and improved upper rails. The bolt is both high-pressure tested and magnetic-particle inspected.
This remains a conventional fixed-gas BCG without enhanced bolt geometry. Its high purchase cost buys the Nanoweapon surface, H13 cam pin, and revised carrier rails, so the value depends on whether those changes matter more than the lower cost of a duty-grade carrier.
Key Features
- Carpenter 158 steel bolt with Nanoweapon chrome nitride finish
- 8620 steel carrier with Nanoweapon chrome nitride finish
- M16-profile carrier rated for full-auto operation
- H13 tool steel cam pin
- Improved upper rails
- High-pressure tested and magnetic-particle inspected bolt
- 5.56 NATO AR-15 configuration
Pros
- +Hard, slick, corrosion-resistant chrome nitride covers both bolt and carrier
- +Uses a Carpenter 158 bolt and 8620 steel carrier
- +Includes an H13 tool steel cam pin
- +Includes Geissele's improved upper rails
- +Bolt is both high-pressure tested and magnetic-particle inspected
Cons
- −Costs substantially more than duty-grade carriers
Detailed Specifications
- boltMaterial
- Carpenter 158 steel
- carrierMaterial
- 8620 steel
- coating
- Nanoweapon chrome nitride on bolt and carrier
- camPin
- H13 tool steel
- profile
- M16, full-auto rated
- caliber
- 5.56 NATO
- hptTested
- Yes
- mpiTested
- Yes
- mpn
- 05-2993
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Build Your Custom Configuration
Add the Geissele Reliability Enhanced Bolt Carrier Group (Nanoweapon) to your build and see how it enhances your platform.