SureFire SF-OBC-556 Optimized Bolt Carrier Group All-Weather Pen your hands stay dry and

your hands stay dry and ready

small tools

2 - SPR1001 Dark SPR

Question 2: Is the harness metal-free where it contacts the body

These platforms use a different cartridge design and connection system

SureFire SF-OBC-556 Optimized Bolt Carrier Group All-Weather Pen your hands stay dry andSureFire SF OBC 556 Optimized Bolt Carrier Group Double Down on Reliability. Invented by Jim Sullivan, one of the original designers of the M16, the SureFire Optimized Bolt Carrier (OBC) doubles the reliability of any M4 M16 AR variant weapon system during suppressed and suppressed firing. Its patented design allows more time for reliable feeding of ammunition from the magazine and nearly eliminates bolt over base malfunctions. The OBC also delays