Originally Posted by mixflip
Its been about 3 years now that gas piston AR's have been on the market. Integral one piece impact shoulders on the BCG and double taper pinned gas blocks are pretty much the gold standard now.
Even the old Adams Arms retrofit kit has updated to double taper pins vs their old hex head bolt system of attaching. And Osprey no longer uses a gas key adapter/impact shoulder anymore. Everybody machines their BCG with an integral impact shoulder now. Dare I say...its standardized for the most part?
Can you mix and match piston parts from different manufacturers? Hey I said I have a piston LWRC, bought to see the hoopla, I didnt see any. If I want a piston again in 223/556 it will be a SCAR or ACR or XCR.