+ Reload speed in rifles is one of 20 skill perks available in The Respawnables. It provides a 5% faster reload speed to the Assault Rifle, Sniper Rifle and the Grenade Launcher. You need the perk + Ammo in machine guns  purchased before to in order to unlock this. It is be available at level 18.

To purchase the perk you need 2,360 Cash icon.

Note: Many rifles are unaffected by this skill perk, including the Scoped Assault Rifle, Elite Assault Rifle, Anti Material Sniper, Cold Beam Rifle, Stig Rifle, ec.