HK MR556A1 Factory Hard Case OEM Rifle + Pistol Cut Foam RARE Original HK416 MR556 Case. Genuine Heckler & Koch (HK) MR556A1 factory hard case with the original dual cut foam insert designed to fit both the rifle and a pistol, along with magazines and accessories. Factory HK hard shell case with HK logo. Original molded foam insert. Rough dimensions: 47″L x 15″W x 6D. Comes with Manual as well (not pictured), and Original HK chamber lock. Open to reasonable offers – priced based on rarity and recent market demand. HK MR556, HK416, Heckler Koch, MR556A1, HK case, rifle case, factory case, OEM HK, HK collector.