Selling New in Box Heckler & Koch MR556A1. I purchased it about 2 years ago with hopes of making a 416D clone; Unfortauntaley I never got around to it, and probably won't get a chance to any time soon. Pistol grip swapped to H&K OEM. 16" Heavy Barrel, H&K OEM Pistol Grip, NOT TRADES Price is 2800.