Originally Posted by rhyslightnin
The reason for the questions!! LolI hope you find its ok. . my nephew left a HW80k in the barn and it had rust in the barrel.I used some penetrating oil tht we used at work (Freeway https://www.amazon.co.uk/L-S-Enginee.../dp/B0051NSFPS ) and a cheap airgun cleaning kit.
It worked out ok for that barrel.
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