SIG SAUER RM400-16B-C M400 RIFLE 16″ BARREL 223/556 Nato

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SIG SAUER RM400-16B-C M400 RIFLE 16″ BARREL 223/556 Nato

The Sig Sauer RM400-16B-C M400 Rifle in 5.56mm features a 16-inch chrome lined barrel with 1-7″ twist, black finish, collapsible stock, detachable carry handle, front post sight, flash hider, direct impingement gas operating system with rotating locking bolt, an overall length of 39 inches and an unloaded weight of 6.5 lbs.


Sig Sauer M400 Semi-automatic AR 223 Rem 556NATO 16″ Black Synthetic RM400-16B-C


This is a Restricted Firearm.

  • Action – Semi-automatic
  • Barrel Length – 16″
  • Capacity – 5/30Rd
  • Finish/Color – Black
  • Caliber – 223 Rem
  • Caliber – 556NATO
  • Grips/Stock – Synthetic
  • Manufacturer – Sig Sauer
  • Manufacturer part # – RM400-16B-C
  • Model – M400
  • Type – AR


THE SIG M400 SERIES TACTICAL RIFLE, designed for use in law enforcement, military operations, or the sporting field as well as competitive shooting. The SIG M400 is a true AR platform tactical rifle. Provides unparalleled accuracy, with a 16″ 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


Additional information

Weight 1 kg

SIG Sauer


5.56/223, 556Nato, 223Rem


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