Dual Interface Rail Mount

Abstract

A firearm accessory mount interface to be mounted on a rail interface system has one or more fastener pairs of tightening fasteners and pivot fasteners as well as alignment relief lugs. The alignment relief lugs are shaped and spaced to provide proper alignment on the rail interface by engaging either a rear or front wall of the KeyMod or M-LOK rail interface mounting slot and due impeding movement parallel to the rail. The pivot fastener is sized to enter the selected rail interface in a horizontal orientation and pivot to a vertical orientation relative to the selected rail interface whereby preventing extraction of the accessory mount. The tightening fastener inserted into a fastener hole, situated at a the center point of the pivot fastener, can then be rotated to secure the tightening fastener and the pivot faster together thereby securing the mount interface onto the firearm.

1 . An mounting interface for use with a firearm handguard, the mounting interface comprising:
 a tightening fastener;   a pivot fastener having a fastener hole rotatably compatible with said tightening fastener;   one or more fixed bores, spaced at least 1.5 inches from the center point of the bore, and extending from a top surface through to a bottom surface;   alignment lugs on the bottom surface of the accessory mount preventing the accessory mount from moving along a longitudinal axis of the firearm handguard;   a handguard having a keyhole-shaped slot with a length and width greater than the pivot fastener, such that the pivot fastener can enter the slot when in a horizontal insertion position parallel to the longitudinal axis of the handguard, but cannot be extracted when the pivot fastener is rotated to a vertical securement position perpendicular to the longitudinal axis of the handguard.   
     
     
         2 . A mounting interface as defined in  claim 1 , wherein the tightening fastener and the pivot fastener are removably coupled with each other. 
     
     
         3 . A mounting interface as defined in  claim 1 , wherein the tightening and the pivot fastener are threaded and mate via rotation of at least one of the fasteners. 
     
     
         4 . A mounting interface as defined in  claim 1 , wherein the tightening fastener is compatible with insertion into the pivot fastener hole. 
     
     
         5 . A mounting interface as defined in  claim 1 , wherein the alignment lugs extend out of the bottom surface of the mount. 
     
     
         6 . The mounting interface as defined in  claim 1 , wherein the accessory mount is a rail for mounting firearm accessories. 
     
     
         7 . The mounting interface as defined in  claim 1 , wherein the alignment lugs have a length and width smaller than the handguard keyhole-shaped slot. 
     
     
         8 . An mounting interface for use with a firearm handguard, the mounting interface comprising:
 a tightening fastener;   a pivot fastener having a fastener hole rotatably compatible with said tightening fastener;   one or more fixed bores, spaced at least 1.5 inches from the center point of the bore, and extending from a top surface through to a bottom surface;   alignment lugs on the bottom surface of the accessory mount preventing the accessory mount from moving along a longitudinal axis of the firearm handguard;   a handguard having a rounded-square slot with a length and width greater than the pivot fastener, such that the pivot fastener can enter the slot when in a horizontal insertion position parallel to the longitudinal axis of the handguard, but cannot be extracted when the pivot fastener is rotated to a vertical securement position perpendicular to the longitudinal axis of the handguard.   
     
     
         9 . A mounting interface as defined in  claim 1 , wherein the tightening fastener and the pivot fastener are removably coupled with each other. 
     
     
         10 . A mounting interface as defined in  claim 1 , wherein the tightening and the pivot fastener are threaded and mate via rotation of at least one of the fasteners. 
     
     
         11 . A mounting interface as defined in  claim 1 , wherein the tightening fastener is compatible with insertion into the pivot fastener hole. 
     
     
         12 . A mounting interface as defined in  claim 1 , wherein the alignment lugs extend out of the bottom surface of the mount. 
     
     
         13 . The mounting interface as defined in  claim 1 , wherein the accessory mount is a rail for mounting firearm accessories. 
     
     
         14 . The mounting interface as defined in  claim 1 , wherein the alignment lugs have a length and width smaller than the handguard rounded-square shaped slot. 
     
     
         15 . An mounting interface for use with a firearm slotted handguard, the mounting interface comprising:
 a tightening fastener rotatably compatible with a fastener hole;   a pivot fastener having a fastener hole rotatably compatible with said tightening fastener;   one or more fixed bores, spaced at least 1.5 inches from the center point of the bore, and extending from a top surface through to a bottom surface;   alignment lugs on the bottom surface of the accessory mount preventing the accessory mount from moving along a longitudinal axis of the slotted handguard;   a handguard having a slot with a length and width greater than the pivot fastener, such that the pivot fastener can enter the slot when in a horizontal insertion position parallel to the longitudinal axis of the handguard, but cannot be extracted when the pivot fastener is rotated to a vertical securement position perpendicular to the longitudinal axis of the handguard.