Out of stock
Sig Sauer M400 5.56 Nato 16" MOE Rifle w/ Romeo3 Sight, Black
Out of stock

Sig Sauer M400 5.56 Nato 16" MOE Rifle w/ Romeo3 Sight, Black

SKU 52067
Brand Sig Sauer
Model Number RM400-16B-ECP-R3
UPC 798681558308
Customers must read Compliance Information before purchasing.

Product Details


Sig Sauer M400 5.56 Nato 16" MOE Rifle w/ Romeo3 Sight, Black

  • Brand: Sig Sauer
  • Model: M400
  • Caliber: 5.56 Nato
  • Action Type: Semi-Auto
  • Capacity: 30
  • Barrel Length: 16"
  • OAL: 35.75" | 32.5" (collapsed)
  • Overall Width: 2.6"
  • Height: 7.5"
  • Weight: 6.6lbs
  • Mag Type: AR-15
  • Sights: Romeo 3 1x25mm
  • Forend Type: Polymer
  • Grip Type: Polymer
  • Receiver Finish: Hard Coat Anodized


The SIGM400 is designed for use in law enforcement, military operations, the sporting field, as well as competitive shooting. The SIGM400 is a true AR platform tactical rifle with unparalleled accuracy. A 16” Nitride treated barrel provides superior corrosion resistance, and a 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability that users come to expect from SIG SAUER. This rifle comes standard with a black polymer Magpul forend, grip, and collapsible stock and also features a railed gas block.


  • Operating System: Direct Impingement
  • Stock Type: Telescopic
  • Barrell Material: Carbon Steel
  • Trigger Type: Mil-Spec
  • Trigger Weight: 5.5-9.0lbs
  • Twist Rate: 1:7
  • Threads: ½” – 28 tpi
  • Accessory Rail: MOE


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These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.
Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).