Related To: Yankee Hill Machine (YHM) Co. Yankee Hill machine is proud to introduce the opensource Keymod mounting system to the YHM line up. This system is simplistic and extremely light weight.

Mission First Tactical, LLC's TEKKO Metal AR Carbine KeyMod Rail System (TMARCKRS) attachment system replaces the plastic factory hand guard and provides secure mounting for KeyMod™ accessories such ...