Precision Airguns and AoA are authorized dealers too check them out but have you tried FIXING yours yet? Post pictures maybe you only need a spring and a cotter pin who knows? Yo!
Maybe it's your MAGAZINE that needs adjusting being an Air Arms and all if it's the OEM factory MAG. Loosten the cover... That ball bearing and spring... Yo!
I have what you are looking for. Sold my 510 about 2 years ago, but had bought the extra magazine advancer goodie because a friends had broken and I didn't wanna be without.
It's yours if you're still looking and I can drop it in mail tomorrow from SoCal if that works for ya.
Hello, apologies to everyone for the delay. Today was a long and hard week for me, I am already in contact with revoman again, thank you colleagues from this great forum.