1
William H Geissele: Multi-stage trigger for automatic weapons. October 13, 2009: US07600338 (55 worldwide citation)

A two-stage trigger assembly for the M16 or AR15 weapon systems. The trigger assembly comprises a spring loaded hammer, trigger and disconnector. Calibrated springs are provided to facilitate the adjustment of the second stage trigger pull weight. No set screws adjustments are necessary and a second ...


2
William H Geissele: Modular rifle handguard. WHG Properties, Merchant & Gould P C, May 19, 2015: US09032658 (14 worldwide citation)

The present disclosure provides an ergonomic handguard that supports rail mounted weapon accessories in a variety of different orientations. The handguard includes sides and bottom surfaces that are ergonomic. The stem includes modular sections of picatinny rail that can be attached to various locat ...


3
William H Geissele: Knife mount for a firearm. WHG Properties, Merchant & Gould PC, May 17, 2016: US09341442 (10 worldwide citation)

A mount for securing a knife to a firearm rail for use of the knife, e.g., to engage a target at close range.


4
William H Geissele: Trigger mechanism with selectable pull characteristics. WHG Properties, Merchant & Gould P C, April 12, 2016: US09310150 (10 worldwide citation)

A trigger mechanism is provided with selectable pull characteristics. The trigger mechanism can include a mode selector element configured to select one of a plurality of disconnector elements designed to provide different pull characteristics. The trigger mechanism can include a trigger element inc ...


5
Neal McKillips, William H Geissele: Firearm accessory mount. WHG Properties, Merchant & Gould P C, February 21, 2017: US09574852 (9 worldwide citation)

A mount for attaching an accessory to a firearm that has a mounting rail and a scope with an objective lens. The mount includes a body with a passageway defined by a perimeter. The passageway configured to receive the objective lens within the perimeter while the scope is secured to the firearm. The ...


6
William H Geissele: Firearm handguard. WHG Properties, Merchant & Gould PC, March 21, 2017: US09599430 (5 worldwide citation)

A free-floating firearm handguard having vertically offset mounting fasteners.


7
William H Geissele: Trigger mechanism with momentary automatic safety. WHG Properties, Merchant & Gould P C, October 10, 2017: US09784518 (5 worldwide citation)

In general terms, this disclosure is directed to a trigger mechanism with a mode selector element that is placeable in a safety mode, a semi-automatic fire mode, and a momentary automatic fire mode. In one possible configuration and by non-limiting example, the mode selector element includes a selec ...


8
William H Geissele: Barrel installation tool. WHG Properties, Merchant & Gould P C, October 10, 2017: US09784520 (3 worldwide citation)

A barrel installation assembly is used for easily installing a barrel onto a receiver of a firearm with proper torque and alignment. The barrel installation assembly includes a barrel nut, barrel nut spacers, and a barrel installation tool. The barrel nut is configured to fasten the barrel to the re ...


9
William H Geissele: Barrel installation tool. WHG Properties, Merchant & Gould P C, January 2, 2018: US09857138 (3 worldwide citation)

A barrel installation assembly is used for easily installing a barrel onto a receiver of a firearm with proper torque and alignment. The barrel installation assembly includes a barrel nut, barrel nut spacers, and a barrel installation tool. The barrel nut is configured to fasten the barrel to the re ...


10
William H Geissele: Barrel installation tool. WHG Properties, Merchant & Gould PC, April 25, 2017: US09631889 (3 worldwide citation)

A barrel installation assembly is used for easily installing a barrel onto a receiver of a firearm with proper torque and alignment. The barrel installation assembly includes a barrel nut, barrel nut spacers, and a barrel installation tool. The barrel nut is configured to fasten the barrel to the re ...