I didn't read the whole comment section, but I seen that you went ahead and put money down on the build. If you like it, good, if not, then take it as a lesson learned. If it were me, I'd have to go with 7.62 or .300 Blackout with the gas piston system. More reliable and don't have to clean it as much if you're lazy (which I clean my guns immediately after shooting them). I don't like anything under .30 caliber unless it's a magnum round. I just like having the extra stopping power and I'm a fan of more recoil (don't ask why, because I don't know). Anyways, how you like your rifle. They are fun. I'm going to be taking AGI courses to try to become a gunsmith.