The Intratec TEC-22 was a great concept but reliability sucked. If this latest incarnation based around the 10/22 Ruger magazine proves reliable and accurate I predict it will fly off the shelves.
Maybe your TEC-22 is defective. The one my shooting buddy has works PERFECTLY and we shoot it all the time. We haven’t tried the new BX-25 magazines in it yet but if the old RamLine mags function so well there’s no need to assume that the higher quality BX-25 wouldn’t work perfectly too. I predict they’ll be out of business within a year IF they ever even ship ANY in the first place. Time will tell.