Police and security professionals are facing increasing dangers both on and off duty. Although no law enforcement profession ever wants to pull their weapon out for use, but when you do you want to know that you have the best. The new SIG556xi gives you unparalleled modularity in barrel length, caliber, magazine type, and stock configuration. It comes with a Polymer handguard (compatible with Magpul® MOE® accessories) as well as several other features:

  • A folding stock combined with ambidextrous magazine release, bolt release, safety selector and charging handle.
  • Accepts any MIL-SPEC AR-15/M4/M16 or most AK-style magazines depending upon lower.
  • Available with a polymer or aluminum handguard.


  • Speculations (Standard Set-up)
  • Country of Origin: United States
  • Caliber: 5.56 NATO / 7.62 x 39mm / 300 Blk
  • Action Type: Semi-Auto
  • Length: 977.9 mm / 38.5”
  • Height (with magazine): 241.3 mm / 9.5 (5.56 NATO) or 266. 7 mm / 10.5” (7.62x39mm)
  • Weight (with magazine): 7.10 lb
  • Magazine Capacity: 30
  • Hazardous Material: None
  • Product ID: 213810
  • UPC Code: 798681439928

For more information click here.  We also carry a variety of Sig Sauer ammunition for all of your ammo needs.

Contact GunCo Arms Today!

Interested clients can access the SIG556xi today by calling 940-341-2501. Our store also offers all sorts of firearms and weapon-related needs such as handguns, rifles, knives, and much more! Visit our contact page for further questions and details. You can also stop by our store located in Wichita Falls, Texas.

NOTE: This rifle is only available to the following qualifying individuals:

  • Active or Retired Law Enforcement with official agency credentials
  • Court Officers with official agency credentials or official documentation
  • State / County / City Coroners with official agency credentials or official documentation
  • First Responders with current credentials or official documentation
  • Active Duty Military with an active duty identification
  • Retired Military with retired military identification
  • Active Reservists with Military Identification
  • Active National Guard with Military Identification
  • NRA Certified Firearms Instructors with current certificate of training