I’m going to take some of the guessing out of here for you guys. There are 80 of these guns. 8030001-8030080
8030001 through 0020 all built in commando shorty config.
8030021 through 49 all in m4 carbine config.
The remaining units all in 20” rifle configuration through 8030080
All were originally papered as 20” rifles when originally formed in 85
Guys, most of these pre may examples popped up after Y2K. Prior to that 65K was not an unreasonable ask as they rarely were offered for sale.
Go look at some old classified ads from Machinegun News in the early to mid 90s.... you will be surprised