Please Note :  Orders may take 5-7 Business days to ship outDue to the COVID-19 virus impact on the workplace and overwhelming order volume. We will email you shipping & tracking updates once shipped. New Inventory is arriving daily but moving very quickly.

JMAC CUSTOMS RRD-4C "556" 1/2X28 Muzzle Brake/Compensator


JMac Customs RRD-4C "556"1/2x28 Muzzle Brake/Compensator Features 

  • Material: Military Grade 17-4PH Stainless Steel
  • Length: OAL 2.1"(53.4mm), Added length 1.5" (38.1mm)
  • Weight: 2 oz, 56 grams
  • Finish: Matte Black Nitride
  • Caliber: .255" bore will work with 5.56, and 5.45
  • Manufactured in the US and counts as 1 922r compliance part

JMac Customs RRD-4C "556" 1/2x28 Muzzle Brake/Compensator is a device specifically designed for the 5.56x45mm caliber to reduce recoil, muzzle rise and flash while weighing less than 2oz! It is threaded 1/2"x28 with a 5.56 specific through hole and made of military grade 17-4ph stainless steel with a black nitride finish for the ultimate in erosion and corrosion protection. It adds 1.5" to your rifle so it is a perfect candidate for pin/weld with a 14.5" barrel. This will also ship with a new crush washer for your installation.


Shipping $7.95 VIA USPS Priority / First Class Mail



 WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - 

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Atlantic Firearms,llc
10337 Bunting Road
Bishopville, MD 21813
Office: (410) 352-5183
Voice: (410) 352-5183
Fax: (410) 352-3374