If you're the mission maker, or simply want to include the option to disable these features. Use this, included by maquez's US Insurgency mission. From "PlayerStaminaSway.sqf".
// Custom Weapon Sway & Recoil
player setCustomAimCoef 0;
player setUnitRecoilCoefficient 0.1;
player addEventHandler ["Respawn", {player setCustomAimCoef 0;}];
player addEventHandler ["Respawn", {player setUnitRecoilCoefficient 0.1}];