Description
Colt 5.56 Bolt Carrier Group(SKU: SP64028) is a genuine factory bolt carrier group built to the highest military specifications, delivering the legendary reliability and durability that Colt has been known for since the M16 era.
This full-auto profile BCG is machined from high-grade 8620 steel (carrier) with a properly staked gas key and features a chrome-lined, phosphate-coated bolt made from Carpenter 158 steel—one of the most trusted materials for military-grade bolts. It includes a properly staked gas key with grade 8 fasteners and a complete assembly with cam pin, firing pin, firing pin retaining pin, and extractor.
Every Colt SP64028 BCG is built to withstand the extreme demands of full-auto fire, high round counts, and harsh environments—making it an excellent choice for duty rifles, competition builds, or anyone who wants the gold-standard reliability of a true Colt factory BCG in their AR-15.
Perfect for:
- Professional users seeking proven military-grade components
- Builders who demand OEM Colt quality
- Anyone upgrading or replacing a BCG in a high-performance or duty rifle
Backed by Colt’s reputation for uncompromising quality and durability.
