| 摘要 |
A muzzle attachment for the barrel of a firearm having O-ring seals around a front cap, a rear cap and the barrel of the firearm when engaged therewith and including a device therein for sealing the muzzle attachment behind a bullet passing therethrough to prevent escape of expanding gases therein propelling the bullet and an expansion chamber about the device. A chamber plug positionable in the firearm chamber makes the weapon waterproof from the chamber to the front cap of the muzzle attachment.
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