JMAC Customs RRD-4C 28S KeyMo Muzzle Brake


The best of both worlds! The JMAC Customs super effective RRD4-4C muzzle brake comp with Dead Air KEYMO suppressor mount features!

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
  • Perfect for quick-mounting your favorited Dead Air Sandman suppressors!

***JMac Customs and KNS Precision are 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.

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