


NOTE II: The 1969-1970 downturn (highlighted in purple) in production numbers is due to Colt withdrawing the AR-15 from the market temporarily to fix the 'hammer follow-down' issue (the gun could fire full-automatically - erratically - if. The serial numbers listed, except for 1963, 1969, 1970, are the serial number at the first of the year. L0500X and earlier were preban Pretty sure what I have here. I remember the preban one I had years ago was in the L0500 grouping.

Kind of wonder if there is a data base for Bushmaster XM 15's Did a trade and in that trade I ended up with a Bushy A2 M4 style carbine XM15 E2s with ser# 元90XXX.
