Microbest .223/5.56 C158 MPI Bolt Only | PHOSPHATE

Description

Full Microbest BCG’s can be found HERE

• Phosphate

Mil-Spec Bolt

• C158 Steel
• Shot Peened
• High Pressure Tested (HPT) – Individually tested
• Magnetic Particle Inspected (MPI) – Individually tested

Mil Spec Extractor – PHOSPHATE

• 4140 Steel
• Sprinco 5-coil Extractor Spring
• Black O-ring Extractor Insert included