Most of the 532nm cheap eBay lasers are modable to some extent. However leadlights tend to have slightly larger crystal sets then most cheap greenies, thus it would handle the increased pump energy better then an easily over saturated tiny crystal. Basically I believe you will still notice higher output from Leadlights after modification then from other cheap eBay 5mW greenies. Doesn't mean it's not worth the try though, $20 is pretty cheap for a green no matter what the output can be modded to!