| 摘要 |
FIELD: sports.SUBSTANCE: group of inventions relates to the bushing for the chamber of a sporting pistol or rifle and to a method of manufacturing thereof. Bushing comprises a tubular configuration, with a connection passage with its entrance orifice (2) and exit orifice (4).EFFECT: said connection passage (8) is calibrated to a predetermined value in function of the output power of the sporting pistol or rifle.10 cl, 5 dwg |
