Sig Sauer M400 TREAD Snakebite 5.56 NATO 16" 30rd Cerakote Elite FDE/SS Rifle RM400-16B-TRD-SB
Sig Sauer M400 TREAD Snakebite 5.56 NATO 16" 30rd Cerakote Elite FDE/SS Rifle RM400-16B-TRD-SB
SKU RM400-16B-TRD-SB-Sig


  • Caliber:5.56
  • Weight:7 lbs
  • Rifle Overall Length:35.5 inches
  • Action:Semiautomatic direct impingement
  • Trigger:Polished hardened trigger
  • Rifle Barrel Length:16 inches
  • Rifle Stock:6 position adjustable
  • Scope Mount:Picatinny rail
  • Iron Sights No
  • Caliber or Gauge:5.56 x 45mm NATO
  • Item ConditionNew
  • UPC798681651726
  • MPNRM400-16B-TRD-SB


The Sig Sauer M400 TREAD is a step in the right direction when it comes to entry level AR15 platform rifles. The rifle utilizes a mid-length direct impingement operating system and comes standard with features usually only found on premium priced rifles. The upper and lower receiver of rifle are made from aircraft grade 7075 aluminum and have been hardcoat anodized for long lasting durability.

The Sig Sauer M400 TREAD features a full length handguard that is free floated and has lightning cuts for heat ventilation. The handguard features Magpul’s MLOK attachment points that reduces rifle weight and gives the M400 TREAD a clean no-nonsense look. The lower receiver features ambidextrous safety controls and bolt release. The barrel of the rifle is made from stainless steel, uses a natural stainless finish, and is crowned with a 3 prong flash hider. If you're in the market for your first AR15 or just looking for an upgrade at a great price point, the M400 TREAD will undoubtedly exceed your expectations. Don't forget to pick up an optic too! A reflex sight or low power variable scope would compliment the rifle incredibly well.

Features of the Sig Sauer M400 TREAD

  • Hardened polished trigger
  • Stainless steel barrel
  • Aluminum frame
  • 6 position adjustable stock

About Sig Sauer

From humble beginnings as a wagon to factory to one of the world’s largest firearms, optics, and ammunition manufacturers; the history of Sig Sauer is rich in innovation and achievement. After winning a contract from the Swiss government in 1864 for their Prelz-Burnand muzzleloading rifles, the Swiss Wagon Factory change its name to Schweizerische Industrie-Gesellschaf, the Swiss Industrial Company, better known as SIG. In 1949 SIG developed the SIG P49, the predecessor to the P210 and continued developing small arms for the Swiss military and police.

Since then the company has change its name, acquired other firearm manufacturers, and crossed the Atlantic—setting up headquarters in New Hampshire. However, what hasn’t changed is the innovative spirit that has driven SIG SAUER develop firearms like the SIG516 rifle, MCX rifle, P320 pistol, and P226 pistol. With clients like the Texas Rangers, United States Secret Service, Navy Seals, and dozens of local law enforcement agencies nationwide; SIG SAUER is there When It Counts.