Ergonomic modular pistol grip for Mossberg 500/590 shotguns. - Rugged one piece design. - Correct angle for best recoil control and quick sight picture recovery. - Textured for secure grip when wet. - Allows attachment of any M4-compatible buffer tube for mounting M4 stocks. - Storage compartments in grip. - Interfaces with the UAS or AGR tactical buttstock systems. - MIL-SPEC reinforced polymer composite. - Weight: 4.7 ounces (134 gr) - Width: 1.85 (47 mm) - Height: 5.59 (142 mm) - Length: 2.7 (68 mm)