I'm considering one of these for my Sig Mosquito, as they are compact and thereby 'fit' the gun. Your options please. Has anyone used one of these? Is there a better product? http://www.outdoorbunker.com/CUTTING_EDGE_SUB_COMPACT_LASER_BY_LASERLYTE_p/(lll-fsr-00v2-140-).htm Also, I know all lasers are a 'challenge' to sight; are these any more difficult? Thanks for your comments. Frog.