Originally posted by Adam Standard Pentax body and lens caps should do the trick.
The mount is called K-Mount, Pentax, PK or P/K. Pentax alone could also refer to the deprecated M42 screwmount, so look for the K.
Originally posted by Adam You can find some cheap ones on ebay if needed!
My local store actually had them cheaper than ebay. (until i bought 10 at once).
Originally posted by patrick9 I am not familiar with the lens.The MZ-50 also known as the ZX-50 in the U.S. uses the K mount system. All of the Pentax DSLRs still use the same mount system so If it worked on the MZ-50 it will work on the DSLRs. That is an advantage of Pentax backward lens compatability
P.S. welcome to the Forums Paul
To be sure, and to educate us, it‘s probably best to post some pics of your lens (incl. front element and mount.) if it is indeed a k-mount, it will not only fit all of pentaxes dslrs, but also the mirrorless K-01.