FX Wildcat MKIII sniper air leak in magazine area

[Fendree]

Hi I was shooting the wildcat today, 2 weeks old, and after my second magazine I felt air flowing past my ear, so immediately stopped shooting and asked my friend if he also had this with his crown. Well nothing like that on the crown, you can see what I mean in the attached video.

Has anyone got an idea what might be wrong?

Thx in advance and have a great weekend..

 

[starlingassn]

probably the breech o-ring

 

[capefeargunr]

If you feel a puff when a shot is fired, yes, the o-ring in the breech end of the barrel. If a constant leak then the valve pin/valve seat is leaking.

 

[Fendree]

Thx very much for the answer its just a puff when a shot is fired. I’ll keep y’all posted.
Have a great day

 

[Fendree]

Yes the O-ring has disappeared, will get another one at the vendor.
Thx again for the fast reply and great help, highly appreciated!!!