| 摘要 |
A break-open over-and-under rifle (21) comprising an upper barrel (23s) and a lower barrel (23i) assembled close to a breech (24) thereof in a sleeve (A) to which an action body (B) is hinged through a hinge pin (P), two symmetrical side seats (30) being made on the sides of the sleeve (A) at the sides of the upper barrel (23s) close to the lower barrel (23i) and close to the breech (24) of the barrels, each side seat (30) being intended to receive an extractor (60a, 60b) in sliding engagement actuated by a spring (6), for each of the extractors (60a, 60b) selector means (70) being foreseen fixedly connected to the sleeve (A) each able to be positioned in an engagement position of the corresponding extractor (60a, 60b) intended to limit its sliding or in a disengagement position of the corresponding extractor (60a, 60b) intended to allow it to slide freely.
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