| 摘要 |
A manually operably cartridge dispensing gun(1) for cartridges of the kind containing two components, said gun including a bed(2) to captively retain the cartridge, a manually operable drive assembly to advance inner(4) and outer(5) concentrically arranged piston pushers against corresponding pistons in the cartridge, the outer piston pusher(5) being dimensioned to bear against a circumferentially outermost piston in the cartridge and including a central aperture to accomodate the inner piston pusher(4) of a first dimension for use with an inner piston of a cartridge having a first component ratio, said inner piston pusher(4) being selectively reconfigurable to a second, reduced, dimension for use with an inner piston of a cartridge having a second component ratio.
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