(R)ecoil

(R)eduction

(D)evice

(4) ports

(C)ompensator

(30) 5/8x24 threads - rated for 30 cal

(S)houlder

(KM) KeyMo

The best of both worlds! Their super effective RRD4-4C muzzle brake comp with KEYMO suppressor mount! 

Specifications:

• Threads: 5/8x24
• Length: 2.82" long
• Material: 17-4ph Stainless
• Weight: 3.84oz
• This is a licensed product through Dead Air Silencers. 

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.