If you're using propane, put a couple of drops of silicone in in the collar of the propane bottle every 8-10 mags or so to keep your seals lubricated. KJW mags are notorious for blowing main seals from overpressure, so make sure you never fill them for more than 5 seconds or so from empty (you should be able to get 2 mags of BBs on 1 fill). Keep the slide and moving parts lubricated with silicone oil. Otherwise, you're good to go.
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