Colt Canada 15.7" IUR upper only, no BCG or charging handle.
Introducing the Colt Canada Integrated Upper Receiver (IUR). Today’s high tech battle situations require our soldiers and law officers to bear the burden of multi-tasking using many accessories from lasers and lights to electronic sighting systems at once. Engineered to give the operator the maximum in flexibility, this solid, light-weight, one piece upper receiver fits smoothly onto any Colt Canada lower receiver to make the IUR transition quick and simple. Expensive third party rail systems that may be complicated and prone to breakage due to the stresses of hard training and use in combat, are no longer required. The IUR gives the operator Four Solid Rails in Weaver, MIL-STD 1913 (Picatinny) or NATO configuration: rails at 3 and 9 o’clock positions for accessory mounting; one reinforced 6 o’clock rail with recoil lug for mounting an underslung grenade launcher, shot-gun or a forward grip and one 12 o’clock continuous rail for various inline sighting options.
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
BARREL:
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
FLASH HIDER:
C9A2 Type. The barrel is fitted with the new proprietary flash hider designed specifically to tame the fire on short 5.56 machine guns. It produces 30% less flash. Designed to direct zero flash into the sight picture and zero gas to the floor.
RAILS:
Full top (39 slot) and bottom (20 slot) rail and the grenade launcher recoil lug
The side rails are partially railed with 10 slots, and a steel insert quick detach (QD) 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