Finished the pistol build for the wife for sneaking around the cedar swamps for deer hunting.My first build. The upper is a Aero left handed with a SS Bartlein 12inch spiral fluted.SB PDW brace,Geissele super 42 spring and buffer with a titanium end plate and nut.Geissile SSp trigger,KNS pins,Battle Arms ambi red selector,Norgan ambi catch,Aero ambi lower,Halo Sun 510CGR optics.It is in 300 black out.