Birchwood casey perma blue liquid/paste

Leica Amplus 6


Well-Known Member
Got an BSA lightening airgun I wish to px against a Weihrauch HW77. It's tidy bar a few bits of rust on the barrel just wondered if anyone has used either of the Birchwood Casey products for similar task ?

thanks Steve
BRACES of Bristol - Mauser M12 with Schmidt & Bender 2.5-10x56 Illuminated Scope