Early and hard to find Colt no-drain-hole stock screw. These are the first type used across AR-15/M16 production in the 1960's and are distinct in that they do not feature a drain hole drilled through the center. These were used in the Colt 601/602/603(early)/604(early)/605/607/608 and other early AR-15/M16 rifles.
These are genuine surplus parts in good condition and will show signs of wear/use.
