I ran into an issue today with the Impact original 16 rounds .25 magazine. I noticed that they had begun to stick and the pellet would jam or you can have multiple pellet feeding into the breech. So, I dismantled both my mags and put some "Super Lube" on the little o ring. Also, if it comes apart on you, make sure that you wind the spring 4 times for good tension. This is the second time I had to do this to keep the magazines from sticking and double feeding etc. I hope that this little tip helps some that don't know this fix as yet.
Stay safe.
Stay safe.