| 摘要 |
A pistol to propel and spin ring-like projectiles such as bottle caps. An impeller is released by a trigger and an off-center mounted hammer strikes and propels the bottle caps with a spin. As the bottle cap exits from the barrel of the gun, a wall mounted rib imparts an additional spinning force to the bottle cap. The trigger of the pistol has a portion for engaging and holding an inside surface of the peripheral wall of the projectile in the firing chamber. When the trigger is actuated the portion engaging the projectile will pivot away and permit the spring biased plunger to engage and propel the projectile.
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