Tell me what the differences are in your experience.
Explain what is better over time
What brands/models are gas piston?
Can I easily identify an impingement over piston setup from a picture?
And anything else you want to add.
I'm using a CMMG .22lr conversion BCG in an AR556. Apparently the kit says you should use it with a gas piston setup, probably for cycling purposes but I haven't had any feed issues.
Explain what is better over time
What brands/models are gas piston?
Can I easily identify an impingement over piston setup from a picture?
And anything else you want to add.
I'm using a CMMG .22lr conversion BCG in an AR556. Apparently the kit says you should use it with a gas piston setup, probably for cycling purposes but I haven't had any feed issues.