Beretta CX4 Storm 4 Position Folding Steady Grip. The 4 Position Folding Steady Grip Locks at horizontal, vertical, 45° & 135° positions. Beretta Trident Logo. Improved performance during rapid fire. Easy to fit & secure. Fits Picatinny / Weaver Rail. Light-weight Molded from reinforced polymer composite. Length in vertical position: 4.5 inches/11.5cm No gunsmithing required