FERFRANS just released a new video that explains the features and benefits of the previously mentioned CRD Muzzle Device System. The new video tests the device two different ways, both impressive, to show the benefits of their QD concussion shield functionality. The reduction in side concussion and blast with the shield installed is plainly evident.
The Ferfrans CQB Modular Muzzle Brake System (FF CQB System) looks like it has tremendous potential, especially for those who can’t or won’t own a sound suppressor. It consists of 2 main parts: a 3 port muzzle brake and a cup shaped quick-detach shield called the Concussion Reduction Device (CRD) that can be attached over the brake.
Muzzle brakes are great for keeping the muzzle of the firearm steady, helping the shooter to deliver faster follow-up shots. Unfortunately, they are also great at rattling the teeth of those around you and spraying debris everywhere when shot near the ground. The FF CQB System seeks to remedy this by providing what looks to be a no compromise muzzle brake that can be used to aid the shooter in controlling recoil and a shield that can be affixed over the muzzle brake to direct the sound and concussion forward, away from the shooter and those around the shooter.
There are other muzzle brake shields on the market but the FF CQB System is different in that it is an all-in-one system, the CRD has QD functionality, and the CRD has some strategically placed ports to allow the brake to perform similarly to how it would perform without the CRD in place. The ports on the CRD seem to be one of the keys to this system as it allows most of the blast to be directed down range but still allows the brake to function fairly normally. The muzzle should still stay mostly level but there will be more rearward push similar to what you would see with a linear compensator.