As of August 1st 2022, Element Armament will not sell nor ship magazines with capacities greater than 10 rounds to the following states: California, Connecticut, Washington, D.C., Maryland, Massachusetts, New York, New Jersey, Vermont and Washington. By utilizing the Element Armament website and/or affiliated selling channels, the user/purchaser acknowledges that he/she is not a resident of the referenced states or locales and will not transport restricted or illegal items into those states.

JMac Customs – RRD-360HD – 14x1LH Keymount Muzzle Device


4 in stock

SKU: JMAC_RRD-360HD-14F-KM Categories: , , ,


(R)ecoil (R)eduction (D)evice (360) Degree Ports (H)eavy (D)uty (14)14-1LH Threads (F)aceMount (KM)KeyMount

The RRD-360HD is designed specifically with short barrels and high pressures in mind! Due to excess pressures and gasses associated with rifle calibers in short-barreled firearms, a barrel length restriction was put in place for many of our popular devices. To remedy this, we’ve taken our 360 design and reinforced the device by adding additional material where it’s needed and removing material in some areas to cut down on size, and weight. You get the same amazing performance out of our 360 devices, now with a Heavier Duty design for short-barreled firearms!

3 layers of protection for your suppressor
No timing / shims not required
Minimal added length
Compatible with dozens of suppressors
Reduced Recoil

14x1LH Barrel Threads
2.050″ long (adds approx 1.5″)
10mm Bore
KeyMount and KeyMicro Compatible
17-4PH Stainless
Black Nitride

This device is designed to be tightened against the face of the barrel. You must use our face shims (optional) or your barrel MUST be faced to properly time this muzzle device.

***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.***

JMac Customs recommends that all suppressor mounts be installed and checked for alignment by a certified professional. Serious damage could result to your suppressor/firearm and physical harm is possible if installed/used incorrectly. All suppressor mounts MUST be tight against the shoulder or face of the barrel, using shims or face-milling method. Contact us if you have any questions or need a recommendation for professional installation. JMac Customs LLC is not liable for injury, damage, or death related to the usage of this product.

**This is a licensed product through Dead Air Silencers.

Additional information

Weight 0.25 lbs
Dimensions 3 × 3 × 3 in

Black, FDE, Red, Strike Blue, Strike FDE, Strike Red


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