The H&K MP5K Folding Stock Black from Heckler & Koch delivers a durable, black polymer folding stock designed to fit both MP5K and SP5K pistol/rifle configurations chambered in 9mm, 10mm, or .40 S&W. This factory original stock features a comfortable butt pad and the practical capability to fold to the right side of the firearm, allowing a more compact profile for storage, transport, or tighter environments without sacrificing control or reliability. Ideal for law enforcement applications, personal defense, or tactical training, the folding buttstock enables smaller stature shooters or officers wearing body armor to achieve a better-fitted stance and aim, while maintaining seamless operation with standard controls. Crafted by Heckler & Koch, the stock replaces the factory butt cap to provide a secure, integrated upgrade that preserves the weapons balance and handling. Whether upgrading a current MP5K or SP5K platform or equipping a field-ready transformation, this stock enhances versatility, concealability, and rapid deployment, making it a practical accessory for professionals and enthusiasts who demand consistent performance from their HK system.