Piston guns are good.... Hk 416 is a great design. Glad companies are using the design for us retired folks semi-auto variants.
Hope you’re well !
Rolling right along! The lastest build and probably my last 5.56 build is very lightweight, and sporting a piston system which appears for all the world like it is self cleaning! ... I’ve shifted into shotguns and modifying twelve and tweny gauges for home defense weaponry. Working on a new size shell to allow an extra round int he tubular mags, enjoying my Lee Load-All II in 20 and 12. You getting any shooting in?