brongy Posted March 18, 2014 Share Posted March 18, 2014 (edited) Hey everyone, i have a 140mm sti mag which holds 17 rounds of 40 cal. Whats the best way to increase the capacity? How many rounds will i be able to add? Edited March 18, 2014 by brongy Link to comment Share on other sites More sharing options...
EEH Posted March 18, 2014 Share Posted March 18, 2014 Spring and follower ( grams ) Dawson base pad,should hold 19 maybe 20 ..That is pretty much the standard. Link to comment Share on other sites More sharing options...
Trent1k1 Posted March 18, 2014 Share Posted March 18, 2014 EEH called it. The Dawson pads can be the +1 or the SNL. I get 20 rounds reloadable once the springs settle in with either pad. Link to comment Share on other sites More sharing options...
Forgetful Posted April 6, 2014 Share Posted April 6, 2014 (edited) Grams followers and grams 4mm basepad or Dawson snl or TTI 3 out of 4 of my mags needed grinding on to fit the mag gauge. Edited April 6, 2014 by Forgetful Link to comment Share on other sites More sharing options...
Aircooled6racer Posted April 6, 2014 Share Posted April 6, 2014 Hello: The Dawson "SNL" base pad and Dawson follower with ISMI spring works well also. Make sure they fit the gauge and you should be good for 19-21 rounds. Thanks, Eric Link to comment Share on other sites More sharing options...
Th3Un4givin Posted April 6, 2014 Share Posted April 6, 2014 I use a Bolen/Dawson pad with ismi springs that I tune myself and have one that holds 22, 21 reloadable. Link to comment Share on other sites More sharing options...
jcc7x7 Posted April 6, 2014 Share Posted April 6, 2014 I went all Dawson and got 20 reloadable and fit the gauge one will hold 21 its the mag I start the stage with. Open the gun inset mag release slide. ready to go Link to comment Share on other sites More sharing options...
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