Product Overview
Proof Research Carbon Fiber 18"
+1 gas system / .750 gas block
5/8-24 threads
1:7.5twist
This comes with a +1 gas tube
This has a Saami 6 ARC Chamber in it and the new upgraded S7 Extension. It is headspaced to a JP Bolt but we can upgrade it to a Headspaced Rexus Bolt Ultra Bolt upon request.
