Military channel had a good show on last night, showing the difference between gas and I guess??? piston driven.
HK??? came out with a new AR. Special Ops troops are loving the weapon, from what they are saying.
Guy took the AR and exposed the gas systems..
Ran 30 rounds through each different system.
Then took a match and placed it too show the heat build up on the different systems.
The standard AR the match lit.
The piston driven he could hold with his hand, even the bolt.
Stay with me on these new fangled dang blasted toys you youngguns are using.
Been 42 long years since I used one. I am learnin.