You could do worse than ask these guys:
http://www.airgunbbs.com/showthread....f-mac1-airguns
Or try the network54 airgun forum in the US.
Inspired by another post I am also on the lookout for some grips - although these might be hens teeth.
I am looking for some left handed grips for a Crosman Mk1.
In the past I have googled and found left handed grips for my Crosman 600 which came, with no problems, from America but I have had no luck so far for my Mk1.
Any ideas?
You could do worse than ask these guys:
http://www.airgunbbs.com/showthread....f-mac1-airguns
Or try the network54 airgun forum in the US.