Got 3 new Arredondo mag springs this weekend. In fact they are "Wolf +10'% springs sold also w. their mag extension. A friend gave me Arredondo extension he used to have on his G-21 mag for IPSC/Standard division. Et voila: I have one of my mags prolonged so now can hold 15+2 rounds Tested on range, it works flawlessly even w. most powerful ammo I got. This mag is gonna be my 1st backup from now on: few more pics: http://i1135.photobucket.com/albums/m621/robert91922/Glock20_Arredondo/Glock20_Arredondo_3.jpg http://i1135.photobucket.com/albums/m621/robert91922/Glock20_Arredondo/Glock20_Arredondo_2.jpg http://i1135.photobucket.com/albums/m621/robert91922/Glock20_Arredondo/Glock20_Arredondo_4.jpg http://i1135.photobucket.com/albums/m621/robert91922/Glock20_Arredondo/Arredondo_spring.jpg - the last one to compare original and Arredondo spring Wanna kill these ads? We can help!