The following information is for those who want to know more about the rifle.
First, there is too much going on with this rifle to classify it as a specific model. That is why I just called it "M16 with Silencer." Example: Lower receiver is made of stainless steel (Group Industries NFA registered lower) with stamped model designation "M16A1." See my other video called "M16 using 22 conversion kit" to see this. In addition, the selector switch states the following: SAFE, SEMI, and AUTO -- just like that of the Vietnam era M16s and M16A1s. Also, the pistol grip is the old version - from an M16 or M16A1.
The stock is made of aluminum and was taken from an Eagle Arms EA-15 rifle. I was going for the "old school" (Vietnam era) CAR-15 look. The upper assembly was made by Colt and has a 1 in 7 twist 16 inch barrel without bayonet lug (A1 profile). It was probably made for a Colt Lightweight Sporter (model R6530). In addition, a sear relief had to be milled into the upper so as to accommodate the full auto sear found in the NFA registered lower. To my knowledge, the US Military never *officially* adopted an M16 variant with a 16 inch barrel.
To be very specific, there is no military model number for this rifle.