You would be surprised, apparently my Parker Hale had never been cleaned since was made in the 1980's (I remember asking the last owner). So a few weeks ago i got curious (like a cat?) and pulled it apart, put the threaded end in a barrel block (wood) and used a vice grip on the nut. I took a bit of cleaning but all went back together OK and shot fine.. The filth that came out was impressive. Probably worth getting something cleanable for a HMR they ARE dirty little buggers.
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