I have a lot of questions about guns, need help. Variety of questions, so be ready?

the 50 cal sniper rifle is the most powerful sniper rifle.50 cal dissert eagle.9 mm & m4 carbine.m16a2 and 40 cal pistol.mossberg of corse.the one i know of is called the street sweper holds like 12 rounds.glock 40 or what they call the gat.dragunov.the 50cal sniper rifle.you are talking about the m203 grenade laucher.both you can fire one round or many.ww2 both depending on your mos.yes support weapons are belt fed.yes thompson shoots faster then m4.called the ak74 shoots same round as the m16.the camo of the us army is now the acu.hoped i helped you .am a small arms repair man and master markman.