ENDLES5INFERNO

Hello, Really new to HPA I recently purchased a Golden eagle Type 870 gas shotgun and was wanting to tap it was wondering the best taps to use. I dont know if my set up matters I have a Basalisk Hose and regulator and a Totemair 48 CI tank. What is some advice or knowledge to apply to maintain and keep your HPA gear if any to make sure I dont damage it, Where is somewhere to fill tanks in the Suffolk norwich area?