A bit yeah though they went from 20-inch M16s at the beginning of the GWOT to 14.5 or less as the main weapon so there was space to slap a suppressor on but you'd give up the maneuverability gains of losing that length. The NGSW winner is pretty short barreled before the suppressor is added and it required particularly spicy (high pressure) ammo to still be effective at that short of a length.
