| 摘要 |
It comprises an auxiliary covering tube 4 centred by its rear end on a bulged outer bearing surface 1a of the small-diameter barrel tube 1 intended for firing bullets and fastened at the end to the outer tube 3; said tube 4, connected externally to the juxtaposed tube 2 intended for cartridge firing by the longitudinal band 5, allowing, by virtue of the appreciable play formed between its bore and the outer profile of the barrel tube 1, the end engagement of an eccentric plug 6, the rotation of which allows the adjustment of the impact of the mouth of said tube 1 in relation to said tube 2; said plug 6 being fastened after adjustment; a sound-attenuating reducer with wads 11 for fitting or not into the cartridge tube in order to obtain two barrels allowing the firing of bullets. The invention can be used for hunting rifles and carbines. <IMAGE>
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