My AR's are pretty much old school ... but I'm old
The most recent build is a 7.62x39 on a Bushmaster receiver
I freshened up this old PWA with a Osprey Defence piston system and a UBR stock ... added a RRA 2stage trigger for good measure
Last spring I had an itch for a AR57 and built this
This is my Service Rifle built for matches and Varmint rig ... both built before companies like Magpul and YHM existed and Ergo was still in its infancy ... the varmint got an upgraded YHM lightened chrome bolt & carrier a few years ago.