The X37 Series Muzzle Brakes combine JMac’s effective RRD muzzle brake design and a direct thread mount for several popular suppressors as well as their BDS-37 and BDS-37-EXT blast shield! This allows you to leave the muzzle device installed and simply thread the suppressor over! Reduces weight, length, and cost compared to QD systems. Direct thread is also the preferred mounting method for accuracy!

Product Specs:

• 5/8-24 Threads
• 0.50" Diameter Bore (Compatible with .45 cal projectiles)
• X37 - 1.375-24 External Threads
• 17-4ph Stainless Steel
• Black Nitride
• Requires timing for proper function.
• Not intended or recommended for barrels shorter than 10.5” when used with rifle calibers

When testing these devices using rifle calibers, JMac found that high rates of fire such as full auto or “mag dumps” could cause damage to the device due to the excess heat, pressure, and gasses from unburnt powder on shorter barrels.

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.