Is 50 Years Of AR-15 Development Overhyped?
The benefit of the piston-operated system versus the standard direct impingement (DI) system is that it keeps the action of the rifle cooler and cleaner.
Day: March 3, 2020
The benefit of the piston-operated system versus the standard direct impingement (DI) system is that it keeps the action of the rifle cooler and cleaner.