See the link below. The information is the same for all Daisy powerline rifles.
The Daisy Powerline 922 typically uses O-rings sized at 0.075 inches in diameter. However, it’s essential to verify the specific O-ring size with the manufacturer or consult the user manual, as variations might exist based on production batches. Always ensure the O-rings are made of durable material suitable for airguns to maintain optimal performance.
I have two suggestions for you. You can try Daisy directly at their Customer Service (See the link below) or another web link that offers all sorts of air gun repairs. See Link #2 below.
Contact Daisy directly (Customer Service) and select the parts manual. See the link below.
go to Ronnie Sunshines on the internet and type in daisy powerline 880 you can get one for about £40
Yes.
The current price for the Daisy 880s with scope is about $48
No it's a spring piston system
It was made between 1977 to 1989
Do a web search for "Airgun repair' there are several places that repair airguns.
Because it is designed to shoot.
No it is not designed to shoot pellets.
I do not recommend it. Its not quite powerful enough