Modify-Tech got this video up showing how to install the Modify Air Brake Kit for their MOD24  airsoft sniper rifle series... "The Modify Air Brake kit is finally on the market for your MOD24/SSG24 players!

We first announced this product in February 2020, since then we spend a lot of time testing in different lengths, different materials, and different hardness of the product. As we said in the video, we choose to decrease the pitch of the sound instead of the decibel to maintain the muzzle velocity(drop less)."