Originally Posted by epj
If there was going to be damage done to this gun, it would have happened in the holster. Putting a few rounds downrange with it isn't going to hurt anything.
The only problem is if one of the numbered parts (numbered to the Guns serial number) break the value of the gun drops significantly. Reading a list of the most common parts to break, some of the top listed parts were the numbered ones. The Luger collectors recommend getting a non matching one to shoot. The chance of replacing a part with the number 91 on it is slim. Hate to take that chance. Below is a list of the numbered parts.
Front Toggle Link
Rear Toggle Link
Hold open latch