Free manual for lorcin 19 mm owners can be downloaded from the internet.
One must dislodge a gun into parts before cleaning.
That is not a question.
If you don't have an owner's manual, find a gunsmith.
Follow instructions in owner's manual
25-50 USD
Take it to a gunsmith
Want ad, gun shop, gun show, on line auctions
The one that came with it
Best thing to do is find a gunsmith
The serial number on a Lorcin L25 is typically located on the right side of the frame, just above the trigger guard. It may also be found on the underside of the slide or near the magazine well. If you're having trouble locating it, checking the owner's manual can provide specific guidance for your model.
Best thing to do is find a gunsmith