First, go to egunparts.com and download the schematic, or find the schematic in the local library, or other resource. Ahead of the trigger guard on the left side is a takedown lever. Work it down, and the slide should remove from the rear. You may have to lift the slide off the rails. BUT, it has been years since I worked on one of these! Best wishes.
http://www.gunpartscorp.com
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Have it checked over by a good gunsmith before buying.
Best to ask a gunsmith for help if you don't have a manual
pull down trigger guard and it comes apart
Where can I purchase a magazine for a American arms P-98 . .22 cal. I think they are 8 rounds. Clone of a P-38.
If you type "Ruger p98 reviews" in google or dogpile you will.
In the US, you need to locate a dealer in your home state that has a special license ( commonly called a Class III) to sell suppressors. You will need to apply to the BATFE for transfer of the suppressor to you, and pay a $200 tax on the transfer.
Recommend you find a gunsmith and ask for help
Ask a gunsmith for help
Best left to a gunsmith
Contact Ruger.