Colt IUR


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  • Gen II Integrated Upper Receiver (IUR):
  • Interchangeable with Mil-Spec lowers
  • Floating barrel system
  • Pinned on low profile gas block
  • Mil-Spec hard anodized black
  • IUR is marked COLT CANADA 2C085 and
  • NATO on the rail
  • Straight gas tube to increase firearm life and ease of installation
  • Iconic cold hammer forged 15.7” chrome lined barrel;
  • Canadian Forces Spec thicker chrome;
  • Phosphated to Mil-Spec;
  • Improved integral forged carbine chamber;
  • Colt Canada hammer forged choke bore;
  • 1/7” twist RH/ 6 groove NATO approved bore;
  • Batch marked barrel and extension
  • High pressure tested HPT and magnetic particle inspection MPI as per Canadian Mil-Spec



  • Enhanced Hybrid Lower Receiver (M4/AR-15)
  • Metal Reinforced Polymer Lower
  • Made to Military Specifications - Accepts all
  • Mil-Spec Uppers and Lower parts kits!
  • Metal Reinforced buffer tube threads
  • Flared Magwell
  • Extended Magazine Catch Guide
  • Inter-lock Hammer and Trigger Pin Retainers
  • Enhanced Trigger Guard
  • Contoured Front Strap
  • Ambidextrous safety compatible
  • Abrasion Resistant
  • Six position M4 adjustable buttstock
  • Carpenter 158 Bolt Carrier Assembly

     ** If you buy the complete firearm we require a copy of your PAL