Flash74 Posted June 25, 2016 Share Posted June 25, 2016 Who here has put Dawson extensions on Pro custom magazines? Was is just put the basepad on with extended spring and all was good to go? Did you have to change the follower? Link to comment Share on other sites More sharing options...
pete627 Posted June 26, 2016 Share Posted June 26, 2016 (edited) I had the Dawson extended base pads on my two magazines (that came in the box with my 16.40). Even tried them with the Arredondo spring/follower in there (which I could jam every once and a while ... going salt shaker) so I put the stock guts back in. Other than not getting the Arredondo sorted out so I wouldn't jam it when trying to force too many rounds in it ... either spring follower combo worked fine. The problem ... (at least for both of mine) was that they were just a tad to long to fit into the 140 length gauge (EGW gauge). I put the Arredondo spring/follower back in with the factory basepads and use them as utility mags (so they don't lock back ... and primarily for stages where you have mandatory reloads after a short round count etc). I can't imagine ever being checked at a match ... but ... mine aren't legal 140s with those extensions on there so I don't use them. I have other 140 match mags that fit the gauge. Found an old photo with the Dawsons installed on the factory mags ... I'll put one back on and take a picture with the mag in the gauge if I get a chance here in a min ... OK ... here it is ... with the Arredondo spring/follower combo and the Dawson ... sitting in the mag gauge ... Edited June 26, 2016 by pete627 Link to comment Share on other sites More sharing options...
fishpinoy27 Posted June 27, 2016 Share Posted June 27, 2016 (edited) If you are going to shoot USPSA, then you will be about 2mm over the guage. Look for a Canadian tube and install the tooless base pads from Dawson and use only the standard length spring with +10% from wolff. You dont need the the extended ones. And Mike Barrerra inspects all mags during the chrono stage during our Major match here in Michigan. Edited June 27, 2016 by fishpinoy27 Link to comment Share on other sites More sharing options...
ParaGunner Posted June 29, 2016 Share Posted June 29, 2016 I use them with ismi para mag springs and modified followers. Never had any issue's . Link to comment Share on other sites More sharing options...
Flash74 Posted June 30, 2016 Author Share Posted June 30, 2016 Everyone, thanks for the info. I have a friend with a 9mm pro custom and 6 stock mags who was looking to increase capacity. So it seems he can just buy basepads and use his stock guts to gain capacity. Link to comment Share on other sites More sharing options...
fishpinoy27 Posted June 30, 2016 Share Posted June 30, 2016 (edited) Flash, Stock as in ProCustom mags? Or Canadian mags? What squad are you shooting next week at Ryan Rocks? Edited June 30, 2016 by fishpinoy27 Link to comment Share on other sites More sharing options...
dogtired Posted July 1, 2016 Share Posted July 1, 2016 I added some Glock plus 2's to s G22 mag and the were in a similar fit. Fortunately I have a tool. Link to comment Share on other sites More sharing options...
Flash74 Posted July 1, 2016 Author Share Posted July 1, 2016 Flash, Stock as in ProCustom mags? Or Canadian mags? What squad are you shooting next week at Ryan Rocks? I am not going to shoot it this year. I have a 3gun match on Saturday and playing paintball on Sunday with my son. My friend only shoots 3gun so the length is not critical on the mags. (Unless he goes to a major match) Link to comment Share on other sites More sharing options...
resortboarder Posted October 5, 2016 Share Posted October 5, 2016 On 6/30/2016 at 11:51 AM, Flash74 said: Everyone, thanks for the info. I have a friend with a 9mm pro custom and 6 stock mags who was looking to increase capacity. So it seems he can just buy basepads and use his stock guts to gain capacity. I'd be interested to know if this worked w/your 9mm mags. I tried this with 9mm Para mags but the indentations that run down the length of the mag gave me problems. When I inserted the ~18th round, the first round would fall below that indentation. After 2-3 rds were fired I got the "salt shaker" effect as someone else wrote. With my factory Pro Custom 16.40 mags, I installed the Dawson tool-less basepads w/factory spring & follower and I could run factory-length .40 @ a reloadable 20rds for nearly 6months. After that, my springs failed so I bought Wolff +10% "extra coils" springs and cut to length. I've never had a problem since and my mags fit the gauge with 1.5mm to spare. Regarding Arrodondo springs & followers in 16.40 mags, those NEVER worked. Follower turned every time I shot the gun resulting in the same "salt shaker" effect. Link to comment Share on other sites More sharing options...
dogtired Posted October 6, 2016 Share Posted October 6, 2016 On 6/30/2016 at 6:07 PM, dogtired said: I added some Glock plus 2's to s G22 mag and the were in a similar fit. Fortunately I have a tool. I must have posted this in the wrong thread. Link to comment Share on other sites More sharing options...
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