Now several folks have posted about Marauders in which the trigger broke while attempting to fire, leaving the gun cocked, loaded, and ready but unable to be fired normally - a potentially dangerous situation.
I think this quick trick will render the gun unable to misfire so that it can be safely transported to where it can be repaired. It's based on the fact that, when the Marauder magazine is empty, it blocks the bolt from closing and therefore will prevent the hammer from striking the valve stem even if released by the sear. Here it is.
With the muzzle pointed in a safe direction at all times...
1. Withdraw the bolt.
2. Remove, open, empty of all pellets, close, and replace the magazine.
Note that this procedure still leaves the gun cocked, loaded, charged, and with an inoperative trigger. But so long as the empty mag is in place, at least it can't misfire.