TRIARC Systems Assembled Upper Receiver 10.5" 5.56mm - Coyote Tan (HIR-235)

TRIARC Systems Assembled Upper Receiver 10.5" 5.56mm - Coyote Tan (HIR-235)

The TRIARC Systems 10.5" 5.56 AR-15 Upper Receiver Group is a top-tier solution for close-quarters tactical performance and suppressed reliability. Designed around their acclaimed TRACK™ 2.0 CrMoV barrel, this upper delivers exceptional accuracy, rugged durability, and smooth cycling—all packed into a compact, highly maneuverable platform. Whether you're assembling a patrol rifle, suppressor host, or defensive SBR, this upper offers uncompromising quality and modular flexibility.

Finished in Coyote Tan HIR-235 Cerakote, which offers visual camouflage and signature reduction under Gen 3 night vision, it’s built with real-world applications in mind.

10.5" TRACK™ 2.0 Barrel
CrMoV steel, straight-balanced contour, 1:7 twist

Inert Gas Heat Treated & Black Nitride Finish
Corrosion-resistant and enhanced barrel life

NP3-Coated Barrel Extension
Smoother cycling and reduced wear

TRILOK Wedge Lock Handguard
9.5" M-LOK rail with 7-sided mounting flexibility and extreme rigidity

Forged TSR-15S Upper Receiver
Mil-Spec aluminum, tight tolerances for premium fit and function

Pinned TRIARC Low-Profile Gas Block
Carbine-length gas system ensures reliable cycling

Muzzle Threaded 5/8x24
Ready for flash hider, muzzle brake, or suppressor mount

Coyote Tan Finish
HIR-235, offers signature management and
camouflage against 3rd Generation Night Vision. This coating was engineered for LEO and Military
applications

Specifications

• Caliber: 5.56 NATO
• Barrel Length: 10.5"
• Twist Rate: 1:7
• Barrel Material: 4150V CrMoV (B-1159E Mil-Spec)
• Barrel Weight: 19.3 oz
• Barrel Treatment: Black Nitride
• Extension Coating: NP3
• Gas System: Carbine Length
• Gas Block Journal: .750" diameter, 1" length
• Gas Block: TRIARC Low-Profile, Pinned
• Muzzle Threads: 5/8x24
• Handguard: 9.5" TRILOK Wedge Lock, 7-sided M-LOK
• Upper Receiver: TSR-15S Forged
• Finish: HIR-235 Cerakote (Coyote Tan)

*This complete upper receiver group is sold without a Bolt Carrier Group (BCG) or Charging Handle.