Colt Semi Auto BCG

SPFI bought this, and “thought” it was a F/A BCG by the description it had, but it’s obviously not. It was a F/A at one time, but was converted to semi auto. The bolt carrier seems to have been resprayed, or something. The bolt has a lot more rounds through it then the carrier, but I’m sure has a lot more life left. Asking $110OBO. Please post here, and send an IM. USPS MO, or Paypal +4% Will be listed elsewhere.