A Recover Tactical's solution is not any, but I have a Gen three Glock 17 with both aftermarket set off and prolonged mag release mounted and It appears to function just great. Why the user submitted Picture seems diverse with the 3D mockup? (From the mockup the front part of https://glock-recover-kit19639.pages10.com/the-recover-tactical-20-20-stock-diaries-58991091