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 optimal performance in mind, the 360HD delivers unparalleled recoil management and flash suppression while providing maximum protection for your suppressor.
1. Reinforced for Heavy Duty Use:
Constructed from 17-4ph stainless steel, the 360HD is built to withstand the rigors of heavy use. Its satin QPQ Black Nitride finish not only enhances corrosion and erosion resistance but also adds a sleek, professional look to your firearm.
2. Graduated Port Design:
The innovative port structure efficiently redirects gases to significantly reduce felt recoil and flash.
Designed with three sacrificial baffles, the 360HD provides superior protection for your suppressor, extending its lifespan.
3. No Timing Required:
The 360HD eliminates the hassle of timing and shims, allowing for quick and straightforward installation. Simply use standard tools: 3/4" socket wrench
4. Rugged and Reliable:
Designed with no barrel length restrictions, the 360HD is optimized for short-barreled firearms and high-pressure applications, ensuring consistent performance across a variety of platforms. Its durable build and unique graduated port design reflect JMac Customs'™ commitment to engineering excellence.
5. Multi-Functional Performance:
Whether you’re running suppressed or unsuppressed, the 360HD offers outstanding versatility:
This KeyMicro® version combines the recoil mitigation of JMac Customs™ RRD muzzle brakes with Dead Air's KeyMicro Quick Detach (QD) technology, offering seamless compatibility with any KeyMo | KeyMicro® Equipped Suppressor or Accessory.
Looking for the P90 Keymo? Shop 360HD-P90-KM at Armory of Kings !
| Thread Pitch | Compatibility | Weight | Shims (Optional) |
| 11/16-24 (360HD-11S-KM-45) | .40 to .458 Caliber Shoulder Mount Application with 11/16-24 Threads | 4.2 oz | |
| M14X1 LH Facemount (360HD-14F-KM) | AKM/AK47 with 14X1LH Threads | 3.3 oz | Shim-face-metric |
| M24X1.5 Facemount (360HD-24F-KM) | AK74/Arsenal/KUSA with 24X1.5RH Threads | 4.6 oz | Shim-face-metric |
| M24X1.5 Mini Beryl (360HD-24FMB-KM) | FB Radom Mini Beryl with 24X1.5RH Threads | 4.6 oz | Shim-face-metric |
| M26X1.5 LH M85 with Bushing (360HD-26F-KM+98042A031) | Zastava M85 with 26X1.5LH Threads | 5.3 oz | Shim-face-metric |
| M26X1.5 LH M92 (360HD-26F-KM) | Zastava M92 with 26X1.5LH Threads | 4.6 oz | Shim-face-metric |
| 1/2-28 Facemount (360HD-28F-KM) | AR15/9MM PCC/AKV Face Mount Application with 1/2-28 Threads | 3.4 oz | Shim-face-metric |
| 1/2-28 Facemount Deep (360HD-28FD-KM) | MP5/K or barrels under .7” diameter and 1” of clearance. | 3.4 oz | |
| 1/2-28 (360HD-28S-KM) | AR15/9MM PCC Shoulder Mount Application with 1/2-28 Threads | 3.4 oz | SHIM-28 |
| 5/8-24 (360HD-30S-KM) | AR10 Shoulder Mount with 5/8-24 Threads | 2.85 oz | SHIM-30 |
| P90 SBR(360HD-P90-KM) | FN P90/PS90 Factory Barrel | 4.5 oz | |
| 5/8-24 .45 Cal (360HD-30S-KM-45) | .40 to .458 Caliber Shoulder Mount Application with 5/8-24 Threads | 2.85 oz | SHIM-30 |
| 5/8-24 Taper (360HD-30T-KM) | SIG|Faxon Tapered Barrel with 5/8-24 Threads | 4.5 oz |
