Two piece upper receiver for firearms
OwnerFrank Desommainventor
Life of this patent
Estimating the term…
Abstract
A two piece upper receiver for a firearm including a first piece having a front end, a rear end, a top, and a bottom, the first piece constructed to operatively carry a bolt carrier and bolt, and to have a barrel coupled to the front end. The bottom is constructed to have a lower receiver coupled thereto. The first piece includes a backbone extending along the top between the front end and the rear end, the back bone having upwardly directed indexing surfaces. A second piece overlies the backbone and includes mating surfaces engaging the indexing surfaces, aligning the second piece with the first piece. A receiving structure is opposite the mating surfaces for receiving accessory devices mounted thereon. Fasteners fixedly attach the second piece to the first piece to form a complete upper receiver.
Claims20
A two piece upper receiver for a firearm including a barrel, the two piece upper receiver comprising:
- a first piece having a front end, a rear end, a top, and a bottom, the first piece constructed to operatively carry a bolt carrier and bolt, and to have the barrel coupled to the front end, the bottom constructed to have a lower receiver coupled thereto, the first piece including a backbone extending along the top between the front end and the rear end, the back bone having upwardly directed indexing surfaces;
- a second piece overlying the backbone of the first piece and including mating surfaces engaging the indexing surfaces aligning the second piece with the first piece, and a receiving structure opposite the mating surfaces for receiving accessory devices mounted thereon;
- and
- fasteners fixedly attaching the second piece to the first piece to form a complete upper receiver.
A two piece upper receiver for a firearm including a barrel, the two piece upper receiver comprising:
- a first piece having a front end, a rear end, a top, and a bottom, the first piece constructed to operatively carry a bolt carrier and bolt, and to have the barrel coupled to the front end, the bottom constructed to have a lower receiver coupled thereto, the first piece including an integrally formed backbone extending along the top between the front end and the rear end, the back bone defining upwardly directed, angularly opposed indexing surfaces;
- a second piece having an inner surface and an outer surface, the second piece overlying and partially enclosing the backbone of the first piece, the inner surface including downwardly directed, angularly opposed mating surfaces engaging the indexing surfaces to align the second piece with the first piece, and the outer surface including a receiving structure for receiving accessory devices mounted thereon;
- and
- fasteners fixedly attaching the second piece to the first piece to form a complete upper receiver.
A firearm comprising:
- a barrel;
- a lower receiver;
- and
- a two piece upper receiver including a first piece having a front end, a rear end, a top, and a bottom, the first piece carrying a bolt carrier and bolt and the barrel coupled to the front end, the lower receiver coupled to the bottom of the first piece of the two piece upper receiver, the first piece including, as an integral part, a backbone extending along the top between the front end and the rear end, the back bone having upwardly directed indexing surfaces, a second piece overlying the backbone of the first piece and including downwardly directed mating surfaces engaging the indexing surfaces, the engaged mating surfaces and indexing surfaces aligning the second piece with the first piece, and a receiving structure opposite the mating surfaces for receiving accessory devices mounted thereon, and fasteners fixedly attaching the second piece to the first piece to form a complete upper receiver.
Dependencies are inferred from the claim text.