[driftdiver]

I’m in the market for a new AR15 and ran across the piston driven ARs at the store. Appreciate the comment, I need to learn more about them.

[archy]

I’m in the market for a new AR15 and ran across the piston driven ARs at the store. Appreciate the comment, I need to learn more about them.

Take a good hard look at the Ruger SR-556 with the gas piston setup. Not my choice, but I've worked on M16s since 1967 and complete teardown of the weapon is no problem for me. And if I get a 5th AR platform, it might well be a Ruger...or another one I build myself.