THESE WERE PULLED FROM BRAND NEW RIFLES, COLT TEST FIRED EACH ONE, DISTINCTIVE DEEP GROOVE C ROLL MARKED, CHROME LINED, C OR CE MARKED EXTRACTOR, THESE ARE UNICORN PARTS. NO LONGER MANUFACTURED BY COLT. ONE UNIT PER BID. ADD $ 16.00 USPS PRIORITY MAIL, SIGNATURE DELIVERY, W/TRACKING NUMBER.