Band Gun muzzle head for conventional aluminium tube or carbon interior diameter 26 mm.The m14 type is for screwed rubbers.Made from stainless steel and hard plastic.There is extra possibility of easy balance in the exterior case, [the lead moulding is not recommended].We include 2 rubber o-ring,inoxrivet for installation.There is possibility of fitting second pair of rubbers-tied in the small wholes.Design for thearrangement of 5 lengths of line in the side line of the barrel,for the avoiding of messing and trembling.Possibility of stabilizing of the spear with the use of the 1st line length, for avoiding of unwanted noise and for the easy release of the spear.