The HK 416 series rifle was designed for U.S. special forces as an alternative to the M-16 variant standard issue firearm. The HK 416 D145RS semi-automatic rifle in .22 LR is manufactured exclusively by Walther under license from HK, making it the only genuine HK tactical rimfire replica available in the world. Every 416 replica has a quad rail forend, a retractable buttstock with a storage compartment, a pistol grip with an additional storage compartment, and a Rail Interface System. The upper and lower receivers are made of solid aluminum just like on the original. The muzzle is threaded and the bolt catch and dust cover both function becasue Walther took the time to get the details right. The sights are rail-mounted with the rear adjustable for both windage and elevation. This rifle comes with the original factory box. Its stock, metal, and bore are all in very good condition.