Hinged firearm receiver
Provided is a hinged firearm receiver configured to operate with an AR-pattern Bolt carrier group, buffer, buffer spring, and buffer tube. The firearm upper receiver has an integral hinge that connects to a rear receiver body and provides an AR-pattern firearm the ability to have a folding stock to reduce length for storage or transportation purposes.
1. A hinged firearm receiver set comprising:
a lower receiver body;
a rear receiver body configured to receive a buttstock;
an upper receiver body configured to operate with a generally round bolt carrier;
a dead hinge section connected to the upper receiver body;
an active hinge section connected to the rear receiver body;
a hinge joint configured to connect the upper receiver body and the rear receiver body allowing movement between an open and a closed position;
wherein the hinge joint is independent of the lower receiver body; and
wherein the hinge joint is an integral component of the firearm receiver set and is not an adapter to a firearm receiver that can otherwise function without it.
2. The hinged firearm receiver of claim 1 , wherein said firearm receiver contains a latch assembly that holds the rear receiver body in the closed position.
3. The hinged firearm receiver of claim 1 , wherein said firearm receiver contains a latch assembly that automatically holds the rear receiver body in the closed position.
4. The hinged firearm receiver of claim 1 , wherein said firearm receiver contains a blocking feature configured to interrupt a bolt carrier group passage.
5. The hinged firearm receiver of claim 1 , wherein said firearm receiver contains a latch assembly that comprises a spring.
6. The hinged firearm receiver of claim 1 , wherein said firearm receiver contains a latch assembly that comprises a button.
7. The hinged firearm receiver of claim 1 , wherein said firearm receiver contains a buffer retaining feature.
8. The hinged firearm receiver of claim 1 , wherein said firearm receiver contains a buffer tube receiving thread portion.
9. The hinged firearm receiver of claim 1 , including a bolt operable to reciprocate between a recoil position and a battery position, and the bolt having a rear end rearward of the rear end of the upper receiver body when the bolt is in the recoil position.
10. The hinged firearm receiver of claim 1 , wherein the dead hinge section and the upper receiver body are a unitary body.
11. The hinged firearm receiver of claim 1 , wherein the dead hinge section and the upper receiver body are composed of multiple connected bodies.
12. The hinged firearm receiver of claim 1 , wherein the dead hinge section is steel and the upper receiver body is aluminum.
13. The hinged firearm receiver of claim 1 , wherein no buffer extension is required.
14. The hinged firearm receiver of claim 1 , wherein a distance between a retainer pin and the upper receiver is less than 0.4″ in the closed position.
15. The hinged firearm receiver of claim 1 , wherein the lower receiver body is not between the upper receiver body and rear receiver body.
16. The hinged firearm receiver of claim 1 , wherein the hinge joint is structurally dependent on the upper receiver body.
17. A hinged firearm receiver set comprising:
a lower receiver body;
a rear receiver body configured to receive a receiver extension;
an upper receiver body containing a generally round bolt carrier path;
a dead hinge section connected to the upper receiver body;
an active hinge section connected to the rear receiver body;
a hinge joint configured to connect the upper receiver body and the rear receiver body allowing movement between an open and a closed position;
wherein the rear receiver body and upper receiver body make contact in the closed position; and
wherein the hinge joint is an integral part of the firearm receiver set and is not an attachment or adaptor to a firearm that can otherwise function without it.
18. A hinged firearm receiver set comprising:
a lower receiver body;
a rear receiver body configured to receive a buttstock;
an upper receiver body containing a generally round bolt carrier path;
a dead hinge section connected to the upper receiver body;
an active hinge section integral to the rear receiver body;
a hinge joint configured to connect the upper receiver body and the rear receiver body allowing movement between an open and a closed position; and
Wherein the dead hinge section is structurally connected to the upper receiver body; and
wherein the hinge joint is an necessary component of the receiver set, as apposed to being an attachment to a firearm that can otherwise connect to a non folding stock without it.