Spike's Tactical ST5BG03 NiB AR-15/M16 Bolt Carrier Group 5.56/.223 Carpenter 158
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Product Description
The Spike's Tactical Bolt Carrier Group (BCG) is a critical upgrade or replacement component for AR-platform rifles, featuring a Nickel Boron (NiB) coating applied inside and out on the bolt, carrier, and gas key for enhanced lubricity and easier cleaning. Built from proven materials and manufactured to MIL-SPEC-style expectations, this BCG is designed for dependable cycling and long-term durability, and is finished with a laser-engraved ST spider logo for a distinct, authentic look.
Product Highlights
- Nickel Boron coating inside and out (bolt, carrier, and gas key) for smooth operation and simplified maintenance
- Machined carrier and bolt construction using 8620 tool steel (carrier) and Carpenter 158 steel (bolt)
- Shrouded firing pin and properly staked, forged MIL-SPEC gas key with Grade 8 hardware
- Quality control features include High Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) on the bolt
- Laser-engraved with the Spike's Tactical ST spider logo for quick identification
Specs
- Product Type: Bolt Carrier Group (BCG)
- Caliber Compatibility: 5.56 NATO / .223 Remington / .300 AAC Blackout
- Finish/Coating: Nickel Boron (NiB), coated inside and out (bolt, carrier, gas key)
- Carrier Material: 8620 tool steel
- Bolt Material: Carpenter 158 steel
- Carrier Style: M16 / Full-Auto
- Gas Key: Forged MIL-SPEC, Grade 8 hardware, properly staked
- Testing: Bolt is HPT and MPI
- Marking: Laser engraved ST spider logo
- Manufacturer Part Number: ST5BG03
- UPC: 855319005501
Specifications
- Manufacturer:
- Spikes Tactical
- Category:
- bolt-carrier-group
- Caliber:
- 5.56x45mm NATO
- Platforms:
- AR-15
- UPC:
- 8228865409146
- MPN:
- ST5BG03
- Required Component:
- Yes
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$207.98
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