Air Arms AIR ARMS S510

I bought my parts from Martin Rutterford at Airguns-USA.com. Just loosen the existing fill fitting slightly till the air starts to bleed out. Wait for all the pressure to bleed out, then swap the parts and refill.
when did you buy the parts from martin ? i havent seen that part there in quite a while ! i think best fittings in UK is the only place that i found in recent time , 2-3 weeks to get it here
 
I bought my parts from Martin Rutterford at Airguns-USA.com. Just loosen the existing fill fitting slightly till the air starts to bleed out. Wait for all the pressure to bleed out, then swap the parts and refill.

when did you buy the parts from martin ? i havent seen that part there in quite a while ! i think best fittings in UK is the only place that i found in recent time , 2-3 weeks to get it here
Call him.