SIG SAUER M400 Tread AR-15, Semi-automatic, 5.56 NATO/.223 Rem., 16" Barrel, 30+1 Rounds

Item # WX2-710548


Mfg. Number: RM400-16B-TRD


UPC: 798681597765

4.5 out of 5 star rating (2 reviews)

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Key Features

  • 5.56 NATO/.223 Remington
  • 30+1 rounds
  • 16" stainless steel barrel
  • Magpul® SL-K 6-position stock
  • M-LOK handguard with lightening cuts to reduce weight
  • Polished single-stage trigger
  • 3-prong flash hider
  • Includes (1) 30-rd. magazine
  • Easy Returns

SIG SAUER® M400 Tread 5.56 NATO/.223 Rem. Semi-automatic AR-15 Rifle

Introducing the first M4 to earn the SIG® name. With the M400, SIG SAUER didn't just set out to make a bog-standard AR. Instead, they utilized the innovation, performance and attention to detail that defines other SIG rifles to evolve the platform. The result is the SIGM400, a superior system offering advanced features available right out of the box that were once only found on the after-market.

It starts with the premium 16" stainless steel barrel that delivers greater accuracy than standard 4140 steel. It comes capped with an effective 3-prong flash hider. The factory-upgraded flat-blade, single-stage trigger comes polished for extra smoothness, giving you a higher degree of control. The free-floating M-Lok handguard features lightening cuts, and won't affect accuracy.

And the best part? Despite the vast array of upgrades, it's still a great value. Buying a bare-bones AR and customizing it would cost you quite a bit more…and you STILL might not be getting this level of performance out of the box.

  • 16" stainless steel barrel delivers enhanced accuracy
  • Magpul® SL-K 6-position stock
  • M-LOK handguard with lightening cuts to reduce weight
  • Handguard is free-floated for greater accuracy
  • Polished single-stage trigger delivers a smoother, lighter pull than 2-stage mil-spec triggers
  • 3-prong flash hider
  • Aircraft aluminum charging handle
  • Includes (1) 30-rd. magazine

Order today!

Key Specifications

  • Item Number: 710548
  • Caliber: 5.56 NATO/.223 Remington
  • Action: Direct impingement
  • Capacity: 30+1
  • Barrel Length: 16"
  • Barrel Material: Stainless steel
  • Barrel Twist: 1:8"
  • Stock: Magpul SL-K 6-position
  • Sights (front/rear): Optics-ready
  • Fire Control: Polished single-stage flat-blade
  • Handguard: M-Lok free-float
  • Flash hider: 3-prong
  • Overall Length: 30.8"
  • Overall Weight: 7 lbs.
  • Mfg. Number: RM400-16B-TRD
  • UPC: 798681597765