The device such as the muzzle is soil or sand when the incidence angle is repeatedly driven quickly arrive at a gun it will be stopped up other importers of shells to a rack moves not firearm revenue for velocity bullets are disclosed. The muzzle to soil or sand or military installation or the like when it is exhibition ground such as shooting as main barrel wherein shape in place often satellite broadcasting key input unit. The, outer shells to the muzzle despite this need when generating material where it is around an outer tap is the total revenue by decomposing time well! [le [le] bud and key and left. The device then call fault function is and then clean the interior of the barrel instead of bullets warhead capable of revenue of vibration by embedding a brush inserted without boring when firing a brush to clean the interior of the barrel while revenue machine can be revenue the device are disclosed.