RECEIVER FOR AN AUTOLOADING FIREARM
First Claim
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1. A firearm with a gas operating system and a dual receiver assembly, comprising:
- an upper receiver assembly configured for receiving magazine-fed ammunition, and having a mechanism for manually reciprocating the action of the firearm;
a lower receiver assembly attached to the upper receiver assembly, said lower receiver assembly being configured to have an ammunition magazine attached thereto for supplying ammunition from the ammunition magazine to the upper receiver assembly;
said upper receiver assembly being detachable from the lower receiver assembly;
a buffer tube having a bore with a forwardly facing opening;
a bolt carrier assembly operative with said buffer tube during firearm operation;
said lower receiver having a support element located in front of the buffer tube opening to support and guide the rear of the bolt carrier assembly during the normal operation of the firearm, said support element having an external surface which substantially occupies a same plane as the bore of the buffer tube, said plane being defined by a lower side of the buffer tube opening.
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Abstract
Improved receiver set for an indirect or direct gas operated firearm wherein the charging handle has been moved to the side of the upper receiver, the magazine well has been flared open to better receive a magazine, and the lower receiver has a semi-circular shelf in the rear which supports the proximal end of the bolt carrier as it is longitudinally displaced due to firing of the weapon.
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Citations
15 Claims
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1. A firearm with a gas operating system and a dual receiver assembly, comprising:
- an upper receiver assembly configured for receiving magazine-fed ammunition, and having a mechanism for manually reciprocating the action of the firearm;
a lower receiver assembly attached to the upper receiver assembly, said lower receiver assembly being configured to have an ammunition magazine attached thereto for supplying ammunition from the ammunition magazine to the upper receiver assembly;
said upper receiver assembly being detachable from the lower receiver assembly;
a buffer tube having a bore with a forwardly facing opening;
a bolt carrier assembly operative with said buffer tube during firearm operation;
said lower receiver having a support element located in front of the buffer tube opening to support and guide the rear of the bolt carrier assembly during the normal operation of the firearm, said support element having an external surface which substantially occupies a same plane as the bore of the buffer tube, said plane being defined by a lower side of the buffer tube opening. - View Dependent Claims (2, 3, 4, 5, 14, 15)
- an upper receiver assembly configured for receiving magazine-fed ammunition, and having a mechanism for manually reciprocating the action of the firearm;
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6. A firearm with a gas operating system and a dual receiver assembly, comprising:
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an upper receiver assembly having a bolt carrier assembly that reciprocates rearwardly and forwardly therein during normal operation of the firearm; a lower receiver assembly removably attached to the upper receiver assembly, a rear end of said lower receiver assembly being configured to have a buffer tube engaged therewith; and a shelf formed in said rear end of said lower receiver assembly, said shelf supporting a rear end of the bolt carrier assembly during firearm operation and preventing said rear end from striking the lower receiver assembly during reciprocation of said bolt carrier assembly. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification