First Look: SIG Sauer M400 Switchblade Pistol

posted on July 21, 2021

The AR-15 platform is popular for a variety of reasons, and one of the biggest is the almost unlimited flexibility of guns using an AR-15 as a starting point. From long-range precision rifles to hunting guns to competition and on to personal defense, the AR can do it all. The M400 line of AR-15s from SIG Sauer is well-known for their performance, value and features, and the M400 Switchblade model is set up right out of the box for full ambidextrous control.

M400 Switchblade Features

  • Ambidextrous bolt catch
  • 2-Stage matchlite duo trigger
  • 11.5 inch carbon steel barrel
  • Cerakote elite finish
  • Magpul BSL brace
  • Free floating handguard


The new M400 Switchblade large-format pistol brings a high level of performance to the M400 product family. The uniquely designed ambidextrous bolt catch and release lever the M400 Switchblade gives you unmatched flexibility and capability, allowing you to run the gun with either your right or left hand. The Switchblade also features an 11.5-inch barrel for a compact size and Magpul's all new BSL brace for maximum performance and control.

The large-format pistol also features a twin locking clamp handguard with M-Lok slots that give you an almost limitless ability to upgrade your gun, along with a match grade flat-blade trigger for accuracy and a Cerakote titanium finish for durability and good looks.


  • Caliber: 5.56 NATO
  • Barrel Length: 11.5 inches
  • Mags Included: One 30-round polymer 
  • Magazine Type: AR-15
  • Action Type: Semi-auto
  • Stock Type: Magpul BSL Brace
  • Barrel Material: Stainless steel
  • Trigger Type: Two Stage matchlite duo
  • Twist Rate: 1:7 inches 
  • Fore-end Type: Alloy
  • Grip Type: Polymer
  • Receiver Finish: Cerakote Elite
  • Overall Length 30 inches
  • Overall Width: 2.5 inches
  • Height: 7.5 inches
  • Accessory Rail: M-Lok
  • Operating System: Direct Impingement


For more information on the M400 Switchblade and other products from SIG Sauer, please visit


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