Sig M400 Tread 5.56 NATO MLOK 16″ Barrel 10rd CA Compliant

Sig M400 Tread 5.56 NATO MLOK 16″ Barrel 10rd CA Compliant


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The Sig Sauer SIGM400 TREAD is a California compliant, optics ready, aluminum frame AR-15 rifle.  The TREAD features a 16” stainless steel barrel with a free-floating M-LOK handguard, SIG enhanced trigger, ambidextrous controls, a fixed stock, a mid-length gas system, and is chambered in 5.56 NATO. The M-LOK handguard features lightening cuts to reduce weight and offers plenty of room for the attachment of accessories.

It boasts a 3 chamber compensator with an ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design for optimal performance. The addition of a ROMEO5 optic featuring a 2MOA dot with ten illumination settings, MOTAC, and 50k battery life is perfect to pair with the quick flip-up front and rear iron sights that are easy to install, adjustable, and deploy quickly. The Sig M-LOK front sight adapter with co-witness height made of lightweight aluminum is perfect for the use of the sights with a scope. The Sig Sauer SIGM400 TREAD is a strong, durable and high performance rifle for training, hunting or plinking.


  • 5.56 NATO
  • 16” stainless steel barrel
  • (1) 10rd polymer magazine
  • CA compliant
  • Fixed stock
  • SIG enhanced trigger
  • 1:8 twist
  • M-LOK handguard

Sig Sauer is a world-renowned firearms manufacturer with a rich history of innovation and design leadership. No other firearms manufacturer is so highly regarded and so universally respected for the quality, reliability, and safety of its products. Since 1864 they have expanded their product line to include suppressors, optics, ammo, and airguns to provide customers with a greater range of firearms and equipment.


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