I am considering buying a light for my GEN4 G21 - but want one with a remote on/off switch. I see this one for a G17,19,22,23 http://www.******tactical.com/stgltalipade.html Not a bad combo price of $129 - free shipping no sales tax. EDIT http://www.cheaperthandirt.net/product/2-STL69300?gclid=CLfesfC7_LMCFQixnQod0UQAZg But it does not say it fits a G21 - I read someplace that they in fact do not fit the G21 but when I compare my GEN3 G19 and GEN4 G21 they look like they are so close in size that I can't see why it would not work. Anyone know if it would in fact fit a G21? or Know of another option for a light with a remote switch that would fit a GEN4 G21? BTW as long as I am starting a thread - what is the reason for the "strobe" feature? Save battery? Blind an attacker? Maybe a flashing light will attract even more attention that a plain light. HEY BG that is trying to shoot me - I AM OVER HERE!!!