Ar 15: Mil spec vs commercial

camd64 said

yes you can.

Click to expand...

sweet!

ok next one!

i have a PWA Commando Lower, 20" bull barrel with carry handle...

so im looking to go thru it to upgrade anything that is a worthy upgrade...

looking to have an action job on it, doing a BAD lever, and was interested in the "gas piston conversion kit", what is it and what does it do?

anything else you guys recommend?