I do not know if it is unsafe or not nobody can say that without seeing it, but Ruger did not Make a RG 14 Rohm Did,
Dougan's book on Ruger will have what you want.
To determine the age of a specific firearm like the RG14 .22 pistol with serial number L537331, you would typically need to consult the manufacturer’s records or reference materials that detail the production dates associated with specific serial number ranges. RG (Rohm GmbH) produced firearms from the 1950s onward, and many RG14 pistols were made in the 1970s and 1980s. Without specific production data, it is challenging to provide an exact age for that serial number.
It is on their web site.
Check their web site
There are bound to be different reasons for different people. But an educated guess would be that they find bikes uncomfortable and roads unsafe.
dirty and unsafe
unsafe
Working conditions in 1895 were poor to sub-optimal for people. People worked long hours and were forced to work in unsafe conditions.
no
The Ruger website lists historical data for their firearms, under customer service.
dirty and unsafe
You should be able to find some of the resellers of ruger 10-22 magazines online at popular sites like ebay.