Decided to gamble on building a semi-auto rig for my primary 1k steel bang'r. Mega Ma-Ten upper/lower, 24" DPMS .925" 1:8.5 barrel, rifle length gas, JP fore end, Geisselle enhanced 2-stage, Magpul grip/buttstock, Vortex Viper PST 4-16 FFP Mrad and American defense recon 20moa mount. Never...