Up for sale is a Sig Sauer M400 Rifle. This rifle is brand new and includes the box. It is the tread edition which includes the 3 prong Sig flash hider and the tread enhanced rail. Please see the photos. Available at 14160 Pennsylvania Rd. Southgate, MI 48195 734-718-8186 M - F: 10A - 530P SAT: 10A - 2P.