224 Valkyrie Nitride Bolt Carrier Group (BCG)
This .224 Valkyrie Bolt Carrier Group (BCG) is manufactured by Swan Machine specifically for AR15Parts.com. It is built to Mil-Spec standards that include a 9310 steel bolt assembly that is nitride treated for durability, a nitride treated 8620 steel carrier assembly, and a properly staked gas key (grade 8 fasteners). This 224 Valkyrie BCG will work with all AR15Parts.com Upper Assemblies chambered in 224 Valkyrie.
Specifications: