I have had great results with the MBX guts so far. I don't losd mags night before a match, I don't let them sit with ammo in them for the ride home from a match. And I don't load full if shooting stages with required reloads. I do shoot 3 matches a month and during the winter and fall months I practice a ton in between the matches. Haven't needed customer service and hope not to need it. Glad to know TTI is an alternative tho.