Bushing for a firearm grip screw
View Patent ↗A bushing for securing a grip to a firearm that includes a housing made from a resilient material and an insert made from a material having a hardness greater than the resilient material of the housing. The housing has a top end, a bottom end, a housing bore extending from the top end to the bottom end, and a contact surface that is configured to engage an internal surface of a receiver of the firearm. The insert is sized and shaped to be received within the housing bore and includes an insert bore configured for engagement with a fastener. The housing is configured to undergo elastic deformation when compressed between the insert and the internal surface of the receiver as the fastener is tightened to draw the insert toward the internal surface of the receiver.
1. A bushing for coupling a firearm grip to a receiver or stock of a firearm, the bushing comprising:
a housing formed from a resilient material and including an elongate base, a seat extending radially outward from a top end of the base, the seat having an upper surface and a lower surface opposite the upper surface, the lower surface being configured to engage a surface of the receiver or stock of the firearm, and a housing bore extending from the upper surface of the seat to the bottom end of the base; and
an insert formed from a material having a hardness greater than the resilient material of the housing, the insert sized and shaped for insertion within the housing bore, the insert including:
an elongate body including an insert bore extending therealong and having an interior connection for engaging a fastener, and
a retaining lip extending radially outwardly from a first end of the elongate body of the insert and having a bottom surface configured to engage the upper surface of the housing of the seat in a substantially flat-lying alignment;
wherein the seat comprises a substantially wedge-shaped body defined by the upper surface of the seat being oriented substantially perpendicular to the base and the lower surface of the seat being oriented at an oblique angle to the upper surface;
wherein the bushing includes an anti-rotation feature configured to prevent the insert from rotating within the housing bore when the fastener is received within the insert bore.
2. The bushing of claim 1 , wherein the resilient material of the housing is selected from the group consisting of nylon and glass-filled nylon.
3. The bushing of claim 1 , wherein the material of the insert is selected from the group consisting of carbon steel, stainless steel, and steel alloy.
4. The bushing of claim 1 , wherein the anti-rotation feature is located at an interface between an outer surface of the elongate body of the insert and the housing bore.
5. The bushing of claim 4 , wherein the housing bore is non-circular and the elongate body includes a non-circular cross section that is received within the non-circular housing bore without rotation.
6. The bushing of claim 1 , wherein the anti-rotation feature is located at an interface between the upper surface of the seat and the retaining lip of the insert.
7. The bushing of claim 6 , wherein the anti-rotation feature comprises at least one raised edge extending upward from the upper surface of the seat to contact a lateral side edge of the retaining lip.
8. The bushing of claim 7 , wherein a top surface of the retaining lip and a top surface of the raised edge are substantially flush with one another when the insert is installed into the housing.
9. The bushing of claim 1 , wherein the wedge-shaped body of the seat is configured to orientate the firearm handle at an oblique angle to a longitudinal axis of the firearm aligned with a gun bore of the firearm.
10. The bushing of claim 1 , further comprising a curved chamfer surface between the upper surface of the seat and an internal surface of the housing bore.
11. The bushing of claim 10 , further comprising a fillet radius between the bottom surface of the retaining lip and the outer surface of the elongate body, the fillet radius being receivable within the curved chamfer surface when the insert is installed within the housing.