Jester_UK 7 Posted July 13, 2018 Hi guys. I have just bought a Nuprol m4 mag which can be switched between lo and mid cap. It looks like it is currently set to lo cap and to adjust it I need to get to the inner mag by removing the outer shell. From the instructions it looks like I need to undo an Allen bolt on the bottom of the mag but I have tried every Allen key I have and none fit. Does anybody have any experience with these mags as it is driving me nuts lol. Share this post Link to post Share on other sites
Jedi_Master 2,469 Posted July 13, 2018 Not used Nuprol Mags but is it possible that you just push the bolt into the mag to release it, not unscrew it. Share this post Link to post Share on other sites
M_P 2,354 Posted July 13, 2018 It's definitely an Allen key to undo, take a trip to b&q they do a number of Allen key sets- might as well get a decent one as you'll definitely use it a lot as an airsofter Share this post Link to post Share on other sites
Jester_UK 7 Posted July 16, 2018 I have two full sets of Allen keys and none of them fitted. Tried one of the keys that came with my Chinese agog knockoff and it fitted so now all sorted. Thanks to everyone who responded. 1 M_P reacted to this Share this post Link to post Share on other sites
