5/8-24 | AR-10 / .30 cal

Available at Optics Planet!  With the rising demand for Plan B-style devices, JMac Customs is proud to introduce our own line of compatible mounts and adapters—engineered for precision, performance, and seamless integration...

Inspired by the H&K G36 Flash Hider, the JMac Customs™ GFH and GFHC muzzle devices are engineered to reduce muzzle flash and mitigate muzzle rize, enhancing your shooting experience. Crafted from erosion and corrosion resistant 17-4PH stainless...

The RRD Recoil Reduction Device is a lightweight, multi-functional muzzle device engineered for unmatched firearm control. Its primary function is to drastically reduce recoil and muzzle rise by diverting gases 90° to the side and upward. During...

The RRD-2C is a shortened version of our popular RRD-4C, offering effective recoil mitigation while maintaining a more compact design. By removing the two smallest ports from the RRD-4C, this muzzle brake still delivers exceptional muzzle control and...

The RRD Recoil Reduction Device is a lightweight, multi-functional muzzle device engineered for unmatched firearm control. Its primary function is to drastically reduce recoil and muzzle rise by diverting gases 90° to the side and upward. During...

The RRD Recoil Reduction Device is a lightweight, multi-functional muzzle device engineered for unmatched firearm control. Its primary function is to drastically reduce recoil and muzzle rise by diverting gases 90° to the side and upward. During...

The RRD Recoil Reduction Device is a lightweight, multi-functional muzzle device engineered for unmatched firearm control. Its primary function is to drastically reduce recoil and muzzle rise by diverting gases 90° to the side and upward. During...

Inspired by the H&K G36 Flash Hider, the JMac Customs™ GFH and GFHC muzzle devices are engineered to reduce muzzle flash and mitigate muzzle rise, enhancing your shooting experience. Crafted from erosion and corrosion resistant 17-4PH stainless...

The 360HD is the latest evolution in JMac Custom's™ Recoil Reduction Device™ (RRD) family of muzzle brakes, designed to meet the needs of serious shooters and professionals alike. Built with durability, ease of...

The 360HD is the latest evolution in JMac Custom's™ Recoil Reduction Device™ (RRD) family of muzzle brakes, designed to meet the needs of serious shooters and professionals alike. Built with durability, ease of...

The ZERO HUB Direct Thread Mount serves as a reliable light weight mounting platform, allowing you to attach compatible devices while maintaining the shortest possible overall length. Designed to mount directly to your muzzle threads, it...

The 360HD is the latest evolution in JMac Custom's Recoil Reduction Device™ (RRD) family of muzzle brakes, designed to meet the needs of serious shooters and professionals alike. Built with durability, ease of installation, and...