US 10,323,891 B1 · Extremely short buffer system and bolt carrier design for firearms

Abstract

A device implementable in an AR-15 styled firearm includes a buffer tube and spring system and a bolt carrier assembly. The buffer tube and spring system is mounted on a lower receiver of the firearm and includes a pusher and a buffer tube which has a cavity that receives the pusher and the bolt carrier tail therein. The bolt carrier assembly includes a bolt carrier head and a bolt carrier tail connected to the pusher. The bolt carrier head includes a cavity that houses a bolt assembly of the firearm therein. The bolt carrier tail is elastically coupled to the bolt carrier head such that the bolt carrier head travels linearly at most by a first dimension, the bolt carrier tail travels linearly at most by a second dimension smaller than the first dimension, and the buffer travels linearly at most by a third dimension smaller than the second dimension.

Claims20

Dependent claims

A device implementable in a firearm, comprising:

a buffer tube and spring system configured to be mounted on a rear end of a lower receiver of the firearm, the buffer tube and spring system comprising a pusher and a buffer tube;
and
a bolt carrier assembly comprising a bolt carrier head and a bolt carrier tail,
wherein a rear end of the bolt carrier tail is connected to the pusher,
wherein the buffer tube comprises a cavity configured to receive the bolt carrier tail and the pusher therein,
wherein a front end of the bolt carrier head comprises a cavity configured to house a bolt assembly of the firearm therein, and
wherein a front end of the bolt carrier tail is elastically coupled to a rear end of the bolt carrier head such that, during operation of the firearm:
the bolt carrier head travels linearly at most by a first dimension,
the bolt carrier tail travels linearly at most by a second dimension smaller than the first dimension, and
the pusher travels linearly at most by a third dimension smaller than the second dimension.

7 more elements

A firearm, comprising:

a lower receiver;
a bolt assembly;
a buffer tube and spring system mounted on a rear end of the lower receiver, the buffer tube and spring system comprising a pusher and a buffer tube;
and
a bolt carrier assembly comprising a bolt carrier head and a bolt carrier tail,
wherein a rear end of the bolt carrier tail is connected to the pusher,
wherein the buffer tube comprises a cavity configured to receive the bolt carrier tail and the pusher therein,
wherein a front end of the bolt carrier head comprises a cavity configured to house the bolt assembly therein, and
wherein a front end of the bolt carrier tail is elastically coupled to a rear end of the bolt carrier head such that, during operation of the firearm:
the bolt carrier head travels linearly at most by a first dimension,
the bolt carrier tail travels linearly at most by a second dimension smaller than the first dimension, and
the pusher travels linearly at most by a third dimension smaller than the second dimension.

9 more elements

Dependencies are inferred from the claim text.

Extremely short buffer system and bolt carrier design for firearms

Life of this patent

Extremely short buffer system and bolt carrier design for firearms

Life of this patent

Abstract

Claims20