The SUPPRESSOR M-LOK® HANDGUARDS for the HECKLER & KOCH MP5K® are specifically designed for use with silencers. Here are their key specifications and features:For use with silencers: Ideal for maximum performance.Dimensions: Width 2.06 inches / Total height 2.6 inches / Inner diameter 1.8 inches..

*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 bracesSimple installationExtremely lightweight designFeatures anti-rotation QD sling swivel socketConstructed from Hard Coat Anodized 606..