Primary Arms(PA) is one of the biggest online retailers of firearms, parts, and accessories. The blossoming and booming company has also built an successful line of red dots, riflescopes, and optics. Son of Liberty Gunworks(SOLGW) is known for building a well-built, rugged, and reliable rifle for today’s shooters. The two companies have joined forces for an exclusive Primary Arms build. The new exclusive brings some old, some new, and some who will consider it an egregious crime against the M-16 platform. Primary Arms and SOLGW are proud to announce the M-16 A5.