*Fitting may be required. There is variation between clones and HK SP5's that may require gunsmith installation* - 1913 Picatinny adaptor for side folding stocks and braces - Simple installation - Extremely lightweight design - Features anti-rotation QD sling swivel socket - Constructed from Hard Coat Anodized 6061 Aluminum for a lifetime of service - Made in the USA - 922R Compliant - Lifetime Warranty - Compatible with HK MP5 and clones such as Century AP5/K Zenith ZF5/K and Military Arms Corporation MAC 5/K - Installed Weight MP5K-PEPA - 3oz