I ran across something interesting. I have a copy of the XM177E2 manual, POMM 9-1005-294-14/1, Operator and Maintenance, Repair and Replacement Parts, Submachine Gun, 5.56MM, XM177E2 dated June 1980.
The federal stock numbers for the collapsible stock assy parts and the 4 1/2" flash suppressor(moderator) are the same as the part numbers for these same parts listed in your catalog.
Any back ground on how you guys came up with the part numbers for these parts? Was Bushmaster ever a parts supplier for the XM177E2 for the Army back in 1980?