Hello and welcome to the forum!
We'd like to hear or see more of your Luger?
Can you tell us any markings on the gun?
Proofs? (see on your left under tech information if you came through
www.lugerforum.com) Tell us what and where proofs and markings are located.
There are forms in this section, where you can print out and then write down pertinent information.
What serial number is on the gun? To include any letters next to or under the serial number?
What year or letters are stamped on the top of the receiver?
What initials or letters are on the toggle?
Can you provide pictures, to include side, top, etc?
Generally a Luger has its own hold-open after the last shot (provided a magazine is in the gun). I know there were some made without this hold-open device, but they are fairly rare.
Mine shoots a bit high, but it depends on how you hold your sight picture.
BTW, do you know the story on your Grandfather's Luger? How it got it, where it was found, etc? Are there any other items he brought back or did he have "bring-back" paperwork?