36873687 Posted July 15, 2016 Share Posted July 15, 2016 I have Mbx an Sti mags. The Sti have grams guts 20 reloadable. Is the extra money worth it for Mbx Link to comment Share on other sites More sharing options...
jcc7x7 Posted July 15, 2016 Share Posted July 15, 2016 In 40 that's fairly normal If they run use them Link to comment Share on other sites More sharing options...
Edge40 Posted July 16, 2016 Share Posted July 16, 2016 I run MBX 21 max and 20 reloadable. Love em, 100% reliable. Link to comment Share on other sites More sharing options...
teros135 Posted July 17, 2016 Share Posted July 17, 2016 I have 6 MBX mags for 9mm/38SC. The 170s load 29 reloadable with TTI innards, never loaded 30. One 155 loads 26 (tight), one 27 (crammed in, not even loadable). The 140s load 23 reloadable. It's how they are, maybe some variation in tolerances. Worth it? Well, they've been pretty reliable so far. Link to comment Share on other sites More sharing options...
gunsngeeks Posted July 18, 2016 Share Posted July 18, 2016 Would you guys recommend the MBX mags even for casual shooting or are the factory STI mags fine? Link to comment Share on other sites More sharing options...
zzt Posted July 18, 2016 Share Posted July 18, 2016 I've never had an STI mag that wasn't tuned. None of my MBX mags have been tuned, and they all run just fine right out of the box. Link to comment Share on other sites More sharing options...
Tino2212 Posted July 18, 2016 Share Posted July 18, 2016 Factory mags must be just fine , i even shoot 9 mm out of my .40 mags without any isues or modifications . Link to comment Share on other sites More sharing options...
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