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JMAC Customs RRD-4C 28S KeyMo Shoulder Mount - 1/2x28

Muzzle Brake

Out of stock

JMAC Customs RRD-4C 28S KeyMo Shoulder Mount - 1/2x28


These are designed to install with provided shim kit on standard shoulder mount style barrels (factory muzzle device installed with crush washer) and can be permanently attached using the provided pin.

  • Threads: 1/2-28 threads
  • Length: 2.82" long
  • Material: 17-4ph Stainless
  • Weight: 3.84oz
  • Includes shim kit and pin





(4) ports


(28) 1/2x28 threads


(KM) KeyMo


***JMac Customs is NOT responsible for improper installation of this muzzle device or any damage to the suppressor using this device. We recommend this be professionally installed and checked to ensure alignment.***

This is a licensed product through Dead Air Silencers. 

More Information
Product Type Muzzle Brake
Manufacturer JMAC Customs
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