Had my g20 stolen about 3 years ago . It was recovered 2 weeks ago . Bad thing was where it was . Was found in the bottom of mission bay . Salt water . Gun is in really good shape . Before it was stolen it had been cerakoted and milled for optics . What’s the best way to free up the slide ? Has rust build up around there the barrel and the slide meet up . I have emailed glock . Hope to send it to them to get refurbished.