Rich406 Posted January 8, 2023 Share Posted January 8, 2023 9 minutes ago, Boomstick303 said: I bought some a year ago. The rest of them are over 3 years old. I have not used the newer ones yet as I have not had a need. Seems strange they are that far off. With that said I have not purchased any 21 round mags in over three years. Maybe the variance is with the mags. It’s almost certainly the mags. Sig doesn’t care about a few thousands of tolerance. The mags are also made by a couple different manufacturers. Link to comment Share on other sites More sharing options...
boudreux Posted January 8, 2023 Author Share Posted January 8, 2023 9 minutes ago, Rich406 said: It’s almost certainly the mags. Sig doesn’t care about a few thousands of tolerance. The mags are also made by a couple different manufacturers. Yea I would almost guarantee it’s the mags Link to comment Share on other sites More sharing options...
X5SigChris Posted January 8, 2023 Share Posted January 8, 2023 22 minutes ago, boudreux said: Yea I would almost guarantee it’s the mags +1 on that. They know they are going to sell. Base pad companies know they have to fall within specs. eyeballing my tubes, I swear I can see the difference between them. Probably just in my head but I’ll fix them tomorrow and try to measure them beforehand. Link to comment Share on other sites More sharing options...
echotango Posted January 8, 2023 Share Posted January 8, 2023 I have old and new TTI base pads on all my mags. None fit the gauge without flattening the wings on the tubes. They all fit. No grinding on the feed lips or pads. Link to comment Share on other sites More sharing options...
boudreux Posted January 8, 2023 Author Share Posted January 8, 2023 10 minutes ago, echotango said: I have old and new TTI base pads on all my mags. None fit the gauge without flattening the wings on the tubes. They all fit. No grinding on the feed lips or pads. How do you flatten them? Link to comment Share on other sites More sharing options...
echotango Posted January 8, 2023 Share Posted January 8, 2023 (edited) 13 minutes ago, boudreux said: How do you flatten them? Hammer at the end of the tube. The bend of the wing(part that slides into the base pad) has a very rounded bend. I use a brass hammer to hammer it and create more a sharp 90* bend. This will shorten the tube. I have done 25+ this way to fit the gauge. Edited January 8, 2023 by echotango Link to comment Share on other sites More sharing options...
boudreux Posted January 9, 2023 Author Share Posted January 9, 2023 10 hours ago, echotango said: Hammer at the end of the tube. The bend of the wing(part that slides into the base pad) has a very rounded bend. I use a brass hammer to hammer it and create more a sharp 90* bend. This will shorten the tube. I have done 25+ this way to fit the gauge. Did this today. Some took a little more beating than others but I've gotten them all to fit now. Thanks for the help Link to comment Share on other sites More sharing options...
X5SigChris Posted January 9, 2023 Share Posted January 9, 2023 It does take a little more effort than one would this. I was under the impression it was a “tap” that fixes it. I was sadly mistaken lol. Link to comment Share on other sites More sharing options...
echotango Posted January 9, 2023 Share Posted January 9, 2023 2 hours ago, boudreux said: Did this today. Some took a little more beating than others but I've gotten them all to fit now. Thanks for the help Link to comment Share on other sites More sharing options...
echotango Posted January 9, 2023 Share Posted January 9, 2023 1 hour ago, X5SigChris said: It does take a little more effort than one would this. I was under the impression it was a “tap” that fixes it. I was sadly mistaken lol. Yes, I pounded the sh1+ out of some of them. Link to comment Share on other sites More sharing options...
RangerTrace Posted January 13, 2023 Share Posted January 13, 2023 So I got my EGW mag gauge in. Is there an "official" was to check the mag? It seems you put the back of the mag towards the gauge, put the feed lips in first and rotate the mag rearward to make sure the base plate clears. If so, all of mine, including the stock Sig 21 rounders fit. Link to comment Share on other sites More sharing options...
echotango Posted January 13, 2023 Share Posted January 13, 2023 10 hours ago, RangerTrace said: So I got my EGW mag gauge in. Is there an "official" was to check the mag? It seems you put the back of the mag towards the gauge, put the feed lips in first and rotate the mag rearward to make sure the base plate clears. If so, all of mine, including the stock Sig 21 rounders fit. Just make sure the back is touching the top and bottom high spots. No light between the mag and gauge. That's it. Link to comment Share on other sites More sharing options...
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