Lenny demo's the new +4 Mag Extension for G42
This guide details the installation of a +4 magazine extension for the Glock 42, increasing its capacity to 10 rounds. The process, demonstrated by Lenny Magill, involves disassembling the magazine, installing a dual spring system, and securing the extension using the Double Diamond M.D.T. tool. Proper grip ergonomics and their impact on accuracy are also discussed, highlighting the benefits of this modification for concealed carry and shooting performance.













