Firearm accessory mounting interface
AssigneeMagpul Industries Corp.
InventorsMichael T. Mayberry, William Bradley Bennett, Timothy Eric Roberts, Duane Liptak
Life of this patent
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Abstract
An improved firearm accessory mounting interface is herein disclosed. The interface can include one or more sets of first and second fasteners that interface through an elongated slot in a firearm in order to mount a firearm accessory to a firearm. The second fastener can be shaped and sized to clear the elongated slot and can, upon clearing the elongated slot, be pivoted to an oblique orientation relative to the elongated slot so that the second fastener cannot be retracted. The first fastener can continue to be turned thus drawing the first and second fasteners toward each other and locking the accessory to the firearm.
Claims25
An accessory mounting interface for a firearm, the interface comprising:
- a firearm accessory having at least one through hole extending from a first surface to a second surface of the firearm accessory;
- a first elongated fastener removably engaged in the through hole and having a first end extending below the second surface of the firearm accessory;
- a second fastener rotationally mated to the first end of the first elongated fastener and having a length greater than a width of the second fastener, the length measured along a longitudinal axis of the second fastener, the second fastener comprising:
- two straight edges parallel to each other;
- and
- a curved portion separating the two straight edges;
- an elongated slot in a firearm having a length greater than a width of the elongated slot, and wherein the width is greater than the width of the second fastener but less than the length of the second fastener, such that the second fastener can pass through the elongated slot when the longitudinal axis of the second fastener is arranged parallel to a longitudinal axis of the elongated slot, but cannot pass through the elongated slot when the longitudinal axis of the second fastener is arranged obliquely to the longitudinal axis of the elongated slot,
- at least one of the two straight edges preventing the second fastener from rotating beyond a closed position once the second fastener has passed through and cleared the elongated slot.
A method of mating a firearm accessory to a firearm having an accessory mounting interface, the method comprising:
- providing a firearm accessory having a through hole;
- providing a first elongated fastener removably engaged in the through hole and having a threaded region and a flanged end;
- providing a second fastener, the second fastener comprising at least two straight edges, wherein one of the straight edges prevents the second fastener from rotating more than 45° to 135° relative to the longitudinal axis of the elongated slot;
- mating the second fastener to the threaded region of the first elongated fastener;
- providing an elongated slot in a wall of a firearm;
- orienting a longitudinal axis of the second fastener parallel to a longitudinal axis of the elongated slot and passing the second fastener through the elongated slot;
- rotating the first elongated fastener, which in turn rotates the second fastener, once the second fastener is clear of the elongated slot, such that the longitudinal axis of the second fastener rotates to an oblique orientation of between 45° to 135° relative to the longitudinal axis of the elongated slot and cannot rotate further, the rotating continuing after the second fastener cannot rotate further thereby drawing the flanged end of the first elongated fastener closer to the second fastener and preventing the second fastener from passing back through the elongated slot and also securing the firearm accessory to the firearm.
A firearm accessory mounting interface comprising:
- an elongated slot in a handguard of the firearm;
- a first cammed fastener having:
- a length sufficient to pass through the firearm accessory and clear a depth of a wall of the handguard;
- an
- a flanged head to press the firearm accessory against an outside of the handguard;
- a second cammed fastener having a length greater than a width and being mated to the first cammed fastener and oriented so as to have a longitudinal axis parallel to a longitudinal axis of the elongated slot when inserted into and passed through the elongated slot and rotated 45° to 135° in order to prevent removal of the second cammed fastener from the elongated slot while the first cammed fastener is rotated such that the second cammed fastener and the flanged head of the first cammed fastener are drawn together thereby locking the firearm accessory to the handguard, the second cammed fastener having two parallel straight edges, one of the two parallel straight edges preventing the second cammed fastener from rotating more than 45° to 135° clockwise or counterclockwise.
Dependencies are inferred from the claim text.