The M16A1 suppressor is a flash suppressor. The M16A2 compensator helps keep the muzzle down during BURST firing. They look a lot alike. The bottom vents of the A1 were closed to make the A2. (There are better flash suppressors on the market.)
The M&P15-22 needs no muzzle down help and the "A1" type need not be indexed and can use a straight lock washer, not peel or crush.
-- Chuck
Thank you both
So why S&W announces A1 Comp?
S&W should say A1 Flash Hider or Flash Suppressor
Thank you both
I understand what you say, but this is all very confusing
So why S&W announces A1 Comp?
S&W should say A1 Flash Hider or Flash Suppressor