SIG SAUER, Inc. is pleased to introduce the M400 TREAD Pistol, a premium entry-level rifle-caliber pistol, that’s fully compatible with existing TREAD branded accessories. It features an 11.5” barrel, with a free-floating M-LOK handguard, a single-stage polished trigger, ambidextrous controls, a KAK Industry Shockwave Blade 2.0 brace, a carbine-length gas system, and is available in 5.56 NATO.