mciver52 Posted December 24, 2015 Share Posted December 24, 2015 (edited) Custom built 2011 gun with primarily STI parts... When the mag does lock the slide to the rear on an empty chamber the slide lock lever is barely in the notch. Seems like maybe the guts of the magazine (spring) are not strong enough to fully force the slide lock lever up? Is this something that a Grams spring and follower will usually fix. I'm just running 126mm mags and primarily only run IDPA round count (10). If I push on the bottom of the mag when I push the slide to the rear it locks up fine...leading me to the spring weight question. Thanks in advance. Edited December 24, 2015 by mciver52 Link to comment Share on other sites More sharing options...
racknrider Posted December 24, 2015 Share Posted December 24, 2015 I had the same issue with 126s in IDPA. I recently tuned my mags with the Dawson kit and now they work. I replaced springs with no benefits. Link to comment Share on other sites More sharing options...
Chutist Posted December 24, 2015 Share Posted December 24, 2015 (edited) ... Edited December 26, 2015 by Chutist Link to comment Share on other sites More sharing options...
mciver52 Posted December 24, 2015 Author Share Posted December 24, 2015 Dawson kit it is. Any benefit to 140mm springs in 126mm tubes? Better upward pressure on the follower? Link to comment Share on other sites More sharing options...
LilBunniFuFu Posted December 24, 2015 Share Posted December 24, 2015 What followers are you currently using? Link to comment Share on other sites More sharing options...
mciver52 Posted December 24, 2015 Author Share Posted December 24, 2015 Stock STI Link to comment Share on other sites More sharing options...
LilBunniFuFu Posted December 24, 2015 Share Posted December 24, 2015 Hmm, usually it's when you put the grams followers in that you start having your issue. Factory base pads I'm guessing? Try out the 140 springs and it that doesn't work you might have to tweak the feed lips to get the follower high enough. Link to comment Share on other sites More sharing options...
mciver52 Posted December 24, 2015 Author Share Posted December 24, 2015 Thx Link to comment Share on other sites More sharing options...
Aircooled6racer Posted December 24, 2015 Share Posted December 24, 2015 Hello: My IDPA 40 mags have the stock followers and 140mm springs. You may have to adjust the feed lips and the follower to get it to work perfectly. Thanks, Eric Link to comment Share on other sites More sharing options...
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