- NcSTAR strives to be your one stop source for quality and affordable firearm related accessories. With 12 years of experience they have come a long way to establish themselves in a crowded tactical industry. They manufacture optics and accessories that are the preferred choice of many professional users, armed forces, and civilian consumers. NcSTAR has something for everyone. The NcStar Classic Commercial Stock is a collapsible AR-15 buttstock compatible with standard commercial buffer tubes. It features a stylish design with a metal QD base on each side for QD slings. This stock has a unique latch mechanism; the first click is for adjusting the stock position and the second full click is for mounting or demounting from the buffer tube. The integrated rubber butt pad allows for non-slip secure shouldering, comfort, and recoil mitigation.