Colt Canada British Special Forces 3rd Gen IUR - 10.5" & 15.7"

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These are current production military Integrated Upper Receivers made for the UK special forces by the masters at Colt Canada.


  • CC-UKSF-10: 10.5" IUR with BCA+CH
  • CC-UKSF-15: 15.7" IUR with BCA+CH

General Features

  • Interchangeable fit on all Mil-Spec pushpin lowers
  • Fully floating barrel system
  • Dry film lubricated bolt carrier channel
  • Screw retained (easily maintained) low profile gas block (under the handguard for safety)
  • Mil-Spec hard anodized black
  • IUR is marked Colt Canada 2C085 and NATO on the rail
  • Straight gas tube to increase life and ease of installation

Barrel Features

  • Iconic Colt Canada cold hammer forged barrel in 10.5" or 15.7" fully chrome lined
  • 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 barrel extension
  • High pressure tested HPT and magnetic particle inspection MPI as per Canadian Mil-Spec
  • Anti-Corrosion coating applied under the handguards
  • New liner to improve thermal proteciton of hands
  • Flash Hider - Standard Canadian C7/C7A1/C8/C8A2 type half birdcage for compensation and flash reduction

Rail Features

  • Full top and bottom rails
    • 10.5" 37 top and 19 bottom
    • 15.7" 46 top and 28 bottom
  • Reinforced grenade launcher recoil lug
  • The side rails are partially railed with 10 slot front accessory mounting point and slotted sling fitting on each side
  • Rail slots are numbered with laser engraving
  • The rails are NATO STANAG 4694 spec and are back compatible with MIL-STD-1913 accessories
  • Protected low profile gas block
  • IUR has a hardened steel insert for the cocking handle latch to resist wear with enlarged tactical latches

Bolt Carrier Assembly Features

  • Full Canadian Forces specification (military configuration) bolt carrier assembly
  • Proof tested, MPI inspected, and lot number controlled bolt
  • CF spec high retention staking of the carrier key
  • Chrome lined carrier and key for wear resistance
  • Chromed firing pin

Colt Canada Charging Handle Features

  • Extended ambidextrous Tactical Latch for easy cocking of your gun with optics in place
  • Solid latch pin is permanently staked in place for worry free operations
  • Mil-Spec finishes applied for weather resistance

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