[kaeLLL]

so my we gbb m4 fires the first round, then the following shots it fires without a bb, the kickback still happens so the gas expels, but the bb isnt being replaced. if i pull charging handle, it puts the bb in and fires, and i can pull and fire single shots but its not launching back far enough to load the new round i guess?

at first my friend and i assumed it was the cold weather. but his kriss was firing fine..
i checked all the mags in water and no leaks. if i heat up the mags, i get 4 ish shots out of it then back to the same problem.
and now its starting to expel all the gas from the mag after 4 or more shots.

any suggestions please??

thanks in advance..

david