Key lock on door is broken

A home owner from New Jersey says:
The Key no longer go in easily and I have to force in, to the point that I no longer use the door to enter. Everything else works fine. Do I just need to replace the key plug and which one is the best.
User submitted photos of patio door handles.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting! Check out our 82-310 . You may be able to use this as a replacement key cylinder.
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