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Questions & Answers
It looks nice but why would you want a copper core? Isnt copper a softer metal? Wouldnt it be more likely to warp, brake or otherwise tear up? Manufacturer Answer

Icon Defense Tru Core brakes (shell and core) are made from 303 Stainless Steel. The "copper" is a copper PVD coating applied to the brake core. The outer shell is coated in black nitride.

by Killer Innovations, Manufacturer, August 20, 2025
2 Models Available
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Product Info for Killer Innovations Icon Defense Tru-Core .223/556 Muzzle Brake

The Tru-Core Muzzle Brake for .223/556 has 2 defining features for your rifle setup. 1stbeing incredible compensation and muzzle rise mitigation. This is achieved in a few ways. 2 rear primary compensation ports tuned to eliminate muzzle rise. Combined with our 2-piece design this brake has 360-degree ports on the inner core that move gas and air in a way other muzzle devices cannot. The Tru-Core design has tapered cross ports that act as a venturi and scavenge gas from the 2ndand 3rdchambers which results in virtually no gas following the bullet on exit. The 2ndinnovative feature for the Tru-Core Muzzle Brake is a -.750 inner core OD which provides the ability to leave the inner core installed for maintenance and removal of the gas block on those 16 overall builds. Included on the Inner Core resides a predrilled hole with a recess for those looking to pin and weld this brake to the barrel.image

Specifications for Killer Innovations Icon Defense Tru-Core .223/556 Muzzle Brake:

Manufacturer: Killer Innovations
Projectile Caliber: .223 Caliber
Finish: Nitride
Fabric/Material: 303 Stainless Steel
Threads per Inch: 1/2x28
Inner Diameter: 0.75 in
Outer Diameter: 0.98 in
Length: 2.36 in
Weight: 4.1 oz

Features of Killer Innovations Icon Defense Tru-Core .223/556 Muzzle Brake

  • Extreme bullet turbulence mitigation
  • Stops muzzle rise and felt recoil
  • Inner core can be pinned with recess provided for welding
  • 11 degree target crown

Package Contents:

  • Killer Innovations Icon Defense Tru-Core .223/556 Muzzle Brake
  • Tru-Core Brake fully assembled
  • Spare 10-321/8 knurled set screw
  • Shim Set
  • Qty 1) 2.00mm
  • Qty 2) 0.34mm
  • Qty 3) 0.22mm
  • Qty 3) 0.11mm
  • Qty 4) 0.075mm

Killer Innovations Icon Defense Tru-Core .223/556 Muzzle Brake Orderable Models

List of Orderable Models

  • Killer Innovations Icon Defense Tru-Core .223/556 Brake, Black Shell/Copper Core, Standard, BKTC556508BC , MPN: BKTC556508BC , UPC: 810104453080 , Code: 3P4-BMB-KIIDTC-BKTC556508BC
  • Killer Innovations Icon Defense Tru-Core .223/556 Brake, Black Sheel/Black Core, Standard, BKTC556508BB , MPN: BKTC556508BB , UPC: 810104453097 , Code: 3P4-BMB-KIIDTC-BKTC556508BB
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