Description
Right To Bear Premium Mil-Spec Phosphate Bolt Carrier Group – 158 HPT/MPI BCG
These Military surplus 158 Bolt carrier groups are manufactured by a leading Military contractor to the exacting standards of the US Military.These HPT / MPI BCG’s are rigorously inspected and are individually High Pressure Tested and then go through a Magnetic Particle Inspection.
Mil Spec Bolt
- 158 Carpenter Steel
- Shot Peened
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI)
Mil Spec Carrier
- 8620 Aircraft Grade Steel
- Full Mass M-16
Mil Spec Extractor
- 4140 Steel per ASTM A108, cold drawn and stress relieved BHN 187-22
- Phosphate Finish
- Extractor Spring
- Black Extractor Insert
- Viton O-Ring
Mil Spec Gas Key
- 4130 Profile Extruded Steel
- Grade 8 Hardware
- Properly Staked
- Chrome Interior
