After purchasing my original XM177E2 upper I have been trying to research some history on this weapon.
My main question is how many of these were made? The only number I have seen is that the original order was for 510 units. Could there have been subsequent orders?
Was the Model 639 built from the left over units or did they make them from scratch?
I figure the civilian units would be hard to pin down but there must be documentation for the military guns somewhere.
These weapons are among some of the most popular among those who build replicas but I am just floored by how little information about the original guns there is out there. Even "The Black Rifle" has only a small section on them.
To further muddy the water the seller of these consecutive serial numbered 639's claims there were only 100 of them made.
WTT/S: Two NIB Colt 639s, consecutive S/Ns, matching moderators -- *EXTREMELY RARE* - AR15.COM
I would appreciate any info or direction to source material you guys can provide.
Heck I'll settle for "I don't knows" and pics of your XM replicas.