The NX15 lower has features not found on standard AR lower receivers that significantly improve handling and performance. The Seekins Precision Enhanced Bolt Catch and Ambi-release feature come standard on the NX15. Custom screw-in dowel pins eliminate the use of roll pins, hammers, and pin punches making assembly simple. The NX15’s skeletonized design is a guaranteed head-turner while reducing excess weight and maintaining structural integrity, move fast, shoot straight, and look good!