The most common of them all is the RPD found commonly during mid act 3, after "Ultimatium" and before "Game over", The RPD is a powerful weapon being accurate from short to mid range and kills in 3-4 shots if you can land them, firing from the hip makes the gun good at close defense with high spread and high damage. Although the RPD has high muzzle flash which can be overcome by firing in bursts of 6 to 8 when aiming, the muzzle flash will not affect you when firing from the hip.