These 5.56 / 300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel. The Rosco Phosphate Bolt Carrier Groups are designed to meet the modern-day carbine shooters requirements.
For their Phosphate Bolt Carrier Groups – they choose to team up with the best – Microbest, so the end user has dependability time after time, every time.
Rosco has also balanced input from their consumers and military end users in order to bring you the product you need, not just the one they want to sell you.
These BCG’s are to MIL Specification and have a properly staked gas key along with a chrome lined coating for extended performance. They also feature a Shot Peened/ MP tested Matched bolt (with upgraded extractor) which is designed to lock up perfectly with their extensions for extreme accuracy. These BCG’s are made to withstand Full-Auto rated fire and unforgiving use from the end user.
Carrier Material: 8620 Steel
Gas Key: 4130 Steel, attached with Grade 8 hardware, properly staked
Cam Pin: Hardened 4340 Steel
Firing Pin: 8740 Steel, Heat Treated, Mil-Spec, Center-less ground, Hard Chrome Plated
Bolt Material: C158, , Phosphate Coated, MPI/HPT
Extractor: 4140 Steel, Heat Treated, Shot Peened
Ejector: S2-S7 Tool Steel, Shot Peened
Rosco's Phosphate/Chrome BCGs ship with upgraded Sprinco Extractor Kit
- Manufacturer Part Number:
- ROS-BCG-002
- Sub Category:
- Bolt Carrier Groups
- Carrier Type:
- M16
- Cartridge:
- 5.56x45 Nato
- Finish:
- Phosphate
