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Adjustable Front & Rear Sights
20-Round .22 LR Magazine
The HK SD semi-automatic rifle is the full-time suppressed version of the MP5 submachine gun, manufactured exclusively by Walther under license from HK. It has an SD-style forearm, a retractable stock, and an integral compensator. The HK-style post front sight is adjustable for elevation and the rear sight is adjustable for elevation and windage. A NAVY pistol grip and authentic sling attachments are standard features.