Please excuse the dumb question if it has been asked before but I wasn't able to find any threads on subject. I just bought my first pistol (Glock 19) and am about to buy my first Shotgun (Mossberg 500) both for home defense and for some fun at the range. My Glock came with the kind of gun lock where you feed the metal chain thing through the open action of the gun (slide locked back) and down through the magazine well. It seems that the only way the Glock gun lock can work is with the gun locked in the open position. On the Mossberg Shotgun, the Loc-Box gun rack/lock they sell also is inserted into the action of the gun. My question is: Is it good for the springs and what not for the gun to be stored for long periods with the slide locked in the open position? What is the preferred way to store the weapon when it is unloaded?