Replacement receiver assembly for an AK-47
View Patent ↗A receiver for an AK-47 style firearm includes an upper receiver and a lower receiver. The upper receiver includes a first side element, a second side element coupled to the first side element, a trunnion support formed between the first side element and the second side element proximate a forward end thereof, and a pivot block formed between the first side element and the second side element intermediate the forward end and a rearward end thereof. The lower receiver is hingedly coupled to the pivot block and movable between an open position and a closed position.
1. A receiver of an AK-47 style firearm comprising:
an upper receiver comprising:
a first side element;
a second side element coupled to the first side element;
a trunnion support formed between the first side element and the second side element proximate a forward end thereof; and
a pivot block formed between the first side element and the second side element intermediate the forward end and a rearward end thereof; and
a lower receiver hingedly coupled to the pivot block and movable between an open position and a closed position.
2. A receiver as claimed in claim 1 wherein the first side element and the second side element each contain a top which together form a rail for mounting accessories.
3. A receiver as claimed in claim 2 wherein the rail is a picatinny type rail.
4. A receiver as claimed in claim 1 wherein the trunnion support is formed from a forward block extending inwardly from each of the first side element and the second side element proximate the forward end thereof.
5. A receiver as claimed in claim 1 wherein the pivot block is formed from an intermediate block extending inwardly from each of the first side element and the second side element intermediate the forward end and the rearward end thereof.
6. A receiver as claimed in claim 1 further including a slot formed in the first side element and the second side element for receiving a charging handle.
7. A receiver as claimed in claim 1 further including integral rails formed in the first side element and the second side element for guiding a bolt carrier therealong.
8. A receiver as claimed in claim 1 further including:
a barrel assembly including a trunnion coupled to a rifle barrel, the barrel assembly coupled to the receiver with the trunnion captured between the first side element and the second side element and supported by the trunnion support; and
a gas piston, a bolt carrier and a bolt are received into position within the upper receiver through the rearward end thereof when the lower receiver is in the open position.
9. An AK-47 style firearm as claimed in claim 8 wherein the lower receiver carries a trigger assembly, a pistol grip, a buttstock, and a magazine, each of which is a stock AK-47 element.
10. An AK-47 style firearm as claimed in claim 9 wherein the stock trigger assembly is modified to add a safety extension thereto, the safety extension extends rearwardly from the trigger assembly to engage a safety selector.
11. An AK-47 style firearm comprising:
an upper receiver comprising:
a first side element;
a second side element coupled to the first side element;
a trunnion support formed between the first side element and the second side element proximate a forward end thereof;
a pivot block formed between the first side element and the second side element intermediate the forward end and a rearward end thereof;
a lower receiver hingedly coupled to the pivot block and movable between an open position and a closed position;
a barrel assembly including a trunnion coupled to a rifle barrel, the barrel assembly coupled to the receiver with the trunnion captured between the first side element and the second side element and supported by the trunnion support; and
a gas piston, a bolt carrier and a bolt are received into position within the upper receiver through the rearward end thereof when the lower receiver is in the open position.
12. An AK-47 style firearm as claimed in claim 11 wherein the first side element and the second side element each contain a top which together form a rail for mounting accessories.
13. An AK-47 style firearm as claimed in claim 11 wherein the trunnion support is formed from a forward block extending inwardly from each of the first side element and the second side element proximate the forward end thereof.
14. An AK-47 style firearm as claimed in claim 11 wherein the pivot block is formed from an intermediate block extending inwardly from each of the first side element and the second side element intermediate the forward end and the rearward end thereof.
15. An AK-47 style firearm as claimed in claim 11 further including a slot formed in one of the first side element and the second side element for receiving a charging handle.
16. An AK-47 style firearm as claimed in claim 11 further including integral rails formed in the first side element and the second side element for guiding the bolt carrier therealong.
17. An AK-47 style firearm as claimed in claim 11 wherein the lower receiver 35 carries a trigger assembly, a pistol grip, a buttstock, and a magazine, each of which is a stock AK-47 element.
18. An AK-47 style firearm as claimed in claim 17 wherein the stock trigger assembly is modified to add a safety extension thereto, the safety extension extends rearwardly from the trigger assembly to engage a safety selector.