5 burst trigger + bullet canister + quad barrel = multi shot annihilator (best with exlposive ammo)
also 5 burst trig + mini cat + bullet canister = single shot killer
no but seriously it doesnt even need to regen bullets and it already fires 5 ammo, its also great to use it with quad barrel V:
LOL I MADE THIS COMMENT WHILE PLAYING IN GAME AND A MOB DROPPED ME THE QUAD BARREL WHILE I HAD THE 5 BURST AND BULLET CANISTER LETS GOOO