| CPC G05G 9/047 (2013.01) [F41C 23/10 (2013.01); G05G 2009/04774 (2013.01)] | 15 Claims |

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1. A controller system for installing on a weapon, the controller system comprising:
a grip defined by a front face comprising one or more buttons and a rear face;
a base comprising a first end defined by an opening and a channel and an opposed second end;
wherein when installed on a weapon, the grip buttons are accessible by a middle finger, ring finger, and pinkie finger of a user while a pointer finger of the user is positioned adjacent to a trigger of the weapon, allowing a single hand of the user to access the grip buttons and the trigger of the weapon;
wherein the grip buttons control a feature of an accessory device;
wherein the weapon has an original buttstock and pistol grip removed and replaced by the grip and base.
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