| 摘要 |
This invention relates to a variable velocity riot gun designed to give the individual using it control over the velocity of the projectile such that he can effect a sub-lethal attack of projectile impact upon his opponent at will on a shot by shot basis at a variety of target distances and hardness. This is achieved by a gun design including two barrels; a main barrel and a vent barrel. The vent barrel slides forward and back to open and close vents in the main barrel. For minimum projectile velocity the vent barrel is disposed fully to the rear with all vents open. When the vent barrel is disposed forward, all vents are closed to produce maximum projectile velocity.
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