Not having a rear sight is pretty standard for kits. I'd pick it up if it meets your requirements. Do you have .22 magazines for the conversion kit?
It says it comes with one. 15 rounds if I read that right.
Who are you to want to escape a thugs bullet? That is only a personal prejudice, ( Atlas Shrugged)
"Those that don't watch the old media are uninformed, those that do watch the old media are misinformed." - Mark Twain