your in the ballpark--- think special forces --with a crossman 1911 bb pistol-- think three day return policy!
the same fine smiths that built all those warped FAL's & a few years ago--
as for who made the carriers --nobody knows other than they were made back when colt was experimenting with outsourcing at around the time of the 08 obama gun rush.
the carrier is overly thin where the split is and the metal is overly hard -- the wrong steel and the wrong heat-treat probably. hell it could even be an import??? i thought all those import china steel carriers got trashed back in the clinton era???
the upper has other problems as the chamber looks --borked.
i talked to this kid the other day he said their offering him a new upper --even though his three days has expired! how generous!
i told him to ask for some free bandages to boot--