If purchasing a BCG with a barreled upper, please follow the below general recommendations. Please contact us with any questions before you place your order.
Thank You, MAS Defense.
- M16 Profile BCG for all Pistol / SBR uppers and 16" barrels with a carbine gas system.
- AR15Profile BCG for 16" barrels with a mid-length gas system, 18", 20" and 24" barrels.
- Magnesium Phosphate Finish
- Bolt: MPI Tested and Shot Peened 9310 or C158
- Extractor: Precision Machined Hardened Tool Steel
- Gas Rings: Stainless Steel per Mil-Spec
- Carrier: M16 Profile Carrier 8620
- Gas Key: 4140 Steel
- Gas Key Screws: Grade 8 Properly Staked
- Cam Pin: Precision Machined
- Retaining Pin: Precision bent and cut to length
- Firing Pin: 416 Stainless Steel
- Assembled ready to drop in your AR15