brucea4 Posted December 5, 2019 Report Share Posted December 5, 2019 Hi gang, Any particular Thompson 30 round mags to stay away from? Link to comment Share on other sites More sharing options...
jim c 351 Posted December 6, 2019 Report Share Posted December 6, 2019 Some Crosby mags can be a problem.Jim C Link to comment Share on other sites More sharing options...
tricky9914 Posted December 6, 2019 Report Share Posted December 6, 2019 I ordered 10 of these mags from What a Country. All but one ran flawlessly in my M1A1... The one that didn't run well has a pretty rusty follower spring, which I will replace. https://whatacountry.com/thompson30-roundmagazine-used.aspx Link to comment Share on other sites More sharing options...
TSMGguy Posted December 6, 2019 Report Share Posted December 6, 2019 I have quite a number of Crosby WWII XXX mags, all purchased NOS. They've been great. What may seem to be magazine problems are most usually gun problems. Link to comment Share on other sites More sharing options...
jim c 351 Posted December 6, 2019 Report Share Posted December 6, 2019 TSMG,If you refer to Frank I's book "AMERICAN THUNDER" , you will read that Crosby 30 rd mags were recalled and modified at the feed lips.Perhaps you bought reworked mags or out of spec mags happened to work in your gun.I had one Crosby 30 rd that would not lock into my 28 until I modified the feed lipsJim C Link to comment Share on other sites More sharing options...
Tiz Posted December 6, 2019 Report Share Posted December 6, 2019 When I sent my gun to PK I sent all my 20 & 30 round mags with it as well. PK advised he would gauge and correct all the mags to spec so there would be no issue with functionality. Some of the mags I had ran fine others not so much. Link to comment Share on other sites More sharing options...
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