I believe you all know what no-recoil cheat is. Yet, the following videos can be useful, as they show normal recoils of SWAT4 guns. And not only from the view of shooter himself, but also from third person view and camera view. Detecting no-recoil in real-game situations when player is moving, leaning and aiming is ofc more difficult, so if you are not sure, beware of false accusations. Better make video and ask other players for opinion.
First video is more complex, contains also slowmotion, but has almost 30 minutes.
Second is shorter and does not contain video from VIEW.