| 摘要 |
A butt structure for a pneumatic gun includes a butt frame, a sleeve, a pneumatic control means and an inner tube. The sleeve has a front end with the outer peripheral surface forming a screw section and a lateral side forming a first slot. The pneumatic control means includes an adjusting ring, a retain ring and a push rod. The adjusting ring is coupled on the screw section and has an inner peripheral surface forming a retain trough. The retain element is to anchor the push rod and has a pin located on the lateral side. The inner tube is housed in the sleeve and fastened to the rear end of the duct of the pneumatic gun and has the lateral side forming a second slot corresponding to the first slot. The retain element and the push rod of the pneumatic control means are housed in the inner tube. The pin of the retain element runs through the first and the second slots and engages with the retain trough of the adjusting ring; The front end of the push rod presses the retain rod of the cartridge firing mechanism. When the adjusting ring is moved on the screw section of the sleeve, the pin is driven to move the retain element to control the strength of the impact spring and thereby adjust the cartridge firing power. |
