Black River Tactical M4A1 Bolt Carrier Group - Carpenter 158 - HPT/MPI Auto

$159.00
No reviews yet Write Review Ask Questions

Black River Tactical M4A1 Bolt Carrier Group - Carpenter 158 - HPT/MPI Auto

  • SKU: BRT00286
In Stock & Ready To Ship!
Current Stock:Only left:

Black River Tactical M4A1 Bolt Carrier Group - Carpenter 158 - HPT/MPI Auto

Description
Limit (2) Per Order

100% made in USA to current USGI M4A1 specifications.

The USGI full auto bolt carrier is Manganese Phosphate coated outside and Hard Chrome lined inside. The Mil-Spec gas key is chrome lined and secured with properly staked Grade 8 fasteners to ensure reliable gas system performance.

Carpenter 158 bolt is shot peened, HP tested and MP inspected.