JMac Customs 360 Face KeyMount HD & KeyMicro Muzzle Brake -14-1LH

Manufactured by JMac Customs
Manufactured by JMac Customs
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Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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The JMac Customs 360 Face KeyMount HD and KeyMicro Muzzle Brake is an exceptional accessory tailored specifically for short-barreled firearms. Engineered with a Heavier Duty design, the RRD-360HD offers enhanced protection with three layers of defense for suppressors, making it the perfect choice for high-pressure rifle calibers. While maintaining exceptional performance, JMac Customs has managed to reduce weight and size by strategically adding material in key areas.

Users will experience the advantages of this innovative muzzle brake, including noticeable recoil reduction and compatibility with a wide range of suppressors. Installation is a breeze, as it requires no timing or shims, providing users with hassle-free use right out of the box. The device boasts 14x1LH barrel threads, a compact 2.050" length, and a 10mm bore, ensuring seamless integration with KeyMount and KeyMicro systems. Crafted from robust 17-4ph Stainless steel and finished with a resilient Black Nitride coating, this muzzle brake guarantees reliable performance in any situation.

It is important to note that the device is not suitable for barrels shorter than 10.5". To achieve proper timing, users must tighten the device against the face of the barrel using JMac Customs' optional face shims or by having the barrel professionally faced. Moreover, JMac Customs highly recommends the installation and alignment of all suppressor mounts by certified professionals to safeguard suppressors and firearms from potential damage.

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BrandJMac Customs
Caliber Gauge.30 Cal
Suppressor MountDeadAir KeyMo
Thread PatternM14 X 1 LH
TypeMuzzle Brake
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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