Firearm
US7971379B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2005 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Sep 22, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A19/43
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A firearm including a barrel having a chamber and an integrally formed upper receiver having a passageway, an accessory rail extending the complete length of the upper receiver, and a guidance feature extending along the passageway. The firearm also includes an operating rod having an anti-bounce mechanism, a bolt that is rotated counter-clockwise to lock against the chamber, a bolt carrier having a safety extension disposed below the bolt that prevents a hammer from striking a firing pin until the bolt is locked against the chamber, a lower receiver, a recoil spring assembly, and a fire control group. The bolt includes a polymer spring that biases a sliding extractor against the base of a cartridge. The sliding extractor is disposed at an angle ranging from thirty degrees to fifteen degrees on the bolt face to provide a low ejection angle from the firearm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.