I got three of these from another supplier just a few months ago when they had them on sale.
My rifle came with two of the original problematic ones but my rifle zings through them with llittle problem so I figured I would take the risk on three new ones. Since I went with a slide fire the increased load count makes it that much more fun.
I was very happy with the new model as all three fired with no problems. I did have to fashion a load assist tool out of an old metal bbq skewer. I wouldnt buy the OEM one as it has been known to break due to the pressure you have to use to load the last few rounds.
Make sure you load them and leave them loaded a for atleast a few days before shooting them this helps with feeding issues.
Anyone who buys these should be very happy with their hard earned... $7.00??????? Realy???? Yep!!!!