Axially relieved bolt face for blowback bolt firearms |
|||||||
| 申请号 | US15711874 | 申请日 | 2017-09-21 | 公开(公告)号 | US20180087855A1 | 公开(公告)日 | 2018-03-29 |
| 申请人 | Quarter Circle 10, LLC; | 发明人 | James L. Ballantyne; Anthony W. Castaneda; Alan L. Cowgill; | ||||
| 摘要 | A blowback bolt for a firearm has a distal bolt face having an axially relieved lower lip closest to the ammunition magazine. The axial relieved lip strips the lead cartridge from the magazine by contacting the rim of the cartridge and scoops it into the counterbore seat on the distal bolt face while maintaining contact with the rim. Chamfered lateral guides at the angular extremities of an arcuate upper guidewall restrict lateral movement of the rim during the scooping. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈