This completely customizable Unique-Grips perfectly conforms to each shooter’s hand, regardless of size, shape, strength or dominance. This ergonomic pistol grip adjusts exactly to your hand to reduce fatigue and improve performance. The patented functionality of the grip allows it to compensate for the natural twist of every shooters hand. Instant fit, instant comfort. Made of space-age polymers this grip easily installs on all mil-spec AR platform rifles. Simply grip it, lock it, and fire away. Weight is 4.2 oz.