we px4 feed issues

[eudean]

hi guys and gals,

i was skirmishing my we px4 the other day and had some feed issues with it it would fire one bb then wouldnt fire anymore it wasnt the mag as i tryed my mates mags and had the same problem as my mags but his feed fine in his we px4.

can any one offer any advice or help on the way to fix or best course of action to take ?

many thanks