bushy for sure. I have one of the m4 carbines with 16 heavy barrel (not the one that has the weird cutout thing to accept the m203) and it will shoot about 2 inch 3 shot groupsat a hundred yards with an eotech holosight on it. I bet if i but a high powered scope on top it would shoot at least 1.5 inches at a hundred. By the way if i was you id go with the bird cage flah supressor, for purely asthetic reasons.