Triarc Systems - Milspec BCG Black Nitride

Regular price $159.00



Case Hardened 8620 Steel


Black Nitride

Gas Key

4130 Steel, attached with Grade 8 hardware and properly staked into a milled “valley”to ensure proper positioning

Ejection Port

Area is milled with added material for more strength and rigidty

Cam Pin
Hardened 4340 cam pin


Firing Pin

Mil Spec firing pin made of 8740 steel, center-less ground and Hard Chrome coated Carrier fits AR15/M4 compatible style Rifles (i.e.) .223/5.56mm, .300BL

Bolt Assembly

Machined from case hardened 9310 steel then shot-peened, heat treated & 100% MPI tested per US mil-spec
*Properly heat treated 9310 steel is on average 8% stronger than Milspec standard Carpenter 158 steel, making the bolt stronger than the Milspec standard*


Each bolt is High Pressure Test bolts under Mil-STD-1816 for both HPT & MPI.

Extractor Spring
5 Coil Enhanced Extractor Spring for increased reliability