| 摘要 |
An air gun comprises a magazine (632) with a plurality of barrels (634) with associated projectiles (670, 672). Air is compressed by a piston (623) through an outlet (637). The barrels are sequentially alignab le with the outlet by an advancement mechanism (653, 664 ). In one embodiment, the magazine is normally biased with a spring (663) towar d the outlet to create a seal (631) with the aligned bar rel. Upon magazine advancement, the advancement mechanism counteracts the spring bias to reduce friction. In another embodiment, the outl et is slidable, under friction provided by the piston, into sealing contact wit h magazine. The gun may be mounted on a bow frame (900) to provide force to propel the piston.
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