The MOE grip is designed for use with all 1913 Picatinny Rail systems on the market. This is the most common form of rail on an airsoft platform, paintball platform, or a real steel platform. Constructed of reinforced polymer the construction is tested to survive and endure the worst conditions you can imagine for you and your gun, and will not quit or malfunction. The aggressive textured pattern of the vertical grip will always ensure positive weapon control, even while fully submerged. The MOE is ergonomically designed for use as a traditional fore grip or for use with the MAGPUL style shooting method the "Thumb Break Method." Making the Stubby style grip of the MOE perfect for both new age and old school style shooters.