Sig Sauer M400 5.56mm FDE Centerfire Pistol with SB15 Stabilizing Brace


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Designed for use in law enforcement, military operations, or the sporting field as well as competitive shooting. The SIG PM400 is a true AR platform tactical pistol. Provides unparalleled accuracy, with an 11.5” chrome-lined and phosphate coated barrel that provides maximum durability and corrosion resistance. A 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability.

  • Pistol Features
  • FDE SB15 Pistol Stabilizing Brace
  • Flip-Up Rear Sight and “F” Marked Front Sight
  • Magpul® MOE® Textured FDE Grip
  • Magpul® MOE® Enhanced Forend
  • A2 Flash Suppressor
  • 5.56 x 45 mm NATO Chrome-Lined Barrel with Phosphate Finish

Sig Sauer SB15 Stabilizing Brace
The PM400 FDE is equipped with the SB-15 stabilizing brace for support and accuracy on the range or on the hunt. The Sig Sauer SB15 Stabilizing Brace will give you improved accuracy and reduced recoil when shooting an AR-pistol with buffer tube. The unique design uses the forearm to provide a natural and comfortable rest for shooters of all sizes and physical ability.

  • Stabilizing Brace fits all pistols equipped with an AR-style buffer tube 1.0” – 1.2” in diameter
  • ATF compliant
  • Veteran designed
  • Made in USA
  • Quick and easy to install

Firearm Specifications

  • Item Number: PM400-11B-EC-FDE-PSB
  • Caliber: 5.56mm NATO
  • Action Type: Semi-auto
  • Weight w/out Mag: 6 lbs
  • Overall Length: 28”
  • Barrel Length: 11.5”
  • Rifling: 1 in 7”
  • Mag Capacity: 10 Rounds
  • CA/MA Compliant: No
  • Features:
    • Direct Impingement Gas Operating System with Rotating Locking Bolt
    • “F” Marked Front/Locking Flip-Up Rear Sight
    • Integral Ambi QD Sling Mounts
    • FDE Magpul MOE Grip
    • Enhanced Forend and FDE SB15 Brace

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