Description
3/16/26- For sale is a vintage Colt SP-1 upper receiver. The receiver has the classic triangular handguards for a vintage AR build. The bolt has the Colt C marking and the barrel is marked “C MP C”, both correct for 60s or 70s era SP1 AR rifles. The upper comes with bolt group and barrel. The barrel is clean and bright, with good rifling. Overall in very good condition.
