[HayZee518]

not really. the cylinder (the part you put your key in) has five pins in the upper part of the cylinder (master pins) backed by five springs. there's another set of pins in the movable part (cylinder) that move up when the correct key is pushed in. when the master pins are flush with the (shear line) the cylinder turns and a pawl at the cylinder's backside engages the lock mechanism to open the door. you could try putting some thin weatherstripping on the door stop (moulding) to quiet down the closing