currently ~4 week lead time A solid Bolt Carrier Group is a key component of your Ar15. Microbest produces top quality mil-spec BCGs for the military and other quality rifle manufacturers. This 5.56 / 223 BCG features a phosphate exterior coating, chrome lined interior, and is properly made, ready to run reliably in your rifle.
These include the oring on the extractor spring, which can be removed.
Mil Spec 8620 Carrier, Chrome Lined
- 8620 Quality Steel
- Full Auto M-16 cut
Mil-Spec Bolt , Phosphate
- Carpenter 158 Steel (c158)
- Shot Peened
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI)
Mil Spec Extractor – Phosphate
- Phosphate extractor has more friction when gripping the case rim, allowing for more reliable extraction.
- 4140 Steel
- Extractor/Ejector Spring by Sprinco
- Sprinco Extractor Insert and Oring
Mil Spec Gas Key, Phosphate
- 4130 Steel
- Grade 8 Hardware
- OCKS Screws
- Properly Staked
4140 Steel Cam pin,
Firing Pin, retaining pin
Weight: 11.6oz
