This is a vertical H&K style grip from Omega Mfg. It is crafted from high-strength polymer with a rubberized coating for a secure grip. This durable, black grip will effortlessly mount onto your 1913 picatinny rail. This grip is by far the nicest shorter style or stubby grip we have encountered for the money. This rock-solid grip is a must-have for anyone that uses a vertical grip. This is the only vertical grip out there that offers a built-in aluminum locking block for ease of security of attachment.