Built Right for an Entry-Level AR-15
SIG Sauer aimed to do the entry-level AR-15 the right way with the addition of the M400 Tread to its lineup, providing consumers with a rifle built from the ground up to offer the best-possible features at a price anyone can afford.
Each SIG Sauer M400 Tread is a cut above what most consumers think of when "entry-level AR-15" springs to mind. Gone are the boilerplate A2 elements. Instead, SIG added a wear- and recoil-reducing mid-length gas system complete with a low-profile gas block hidden under a free-float handguard compatible with all M-LOK accessories. The rifle also features ambidextrous controls, and the barrel is machined from stainless steel.
- Direct-impingement operation
- Barrel length: 16 inches
- Chambered in 5.56 NATO
- Ships with one 30-round magazine
Other upgraded components on the SIG Sauer M400 Tread include a Magpul SL-K collapsible stock and a polished trigger that provides enhanced control and accuracy.