Metric pistons have an O-ring to help keep the silencer tight while firing. Each pack contains two O-rings.
Caliber | 45 Caliber |
---|
Nfa Thread Pattern | 16x1mm LH |
---|
Additional Feature 1 | O-ring for Metric Piston |
---|
Additional Feature 2 | Piston Thread 16x1RH&LH |
---|
Determined at checkout.