This popped up on Reddit this afternoon and since people are apparently actually buying that ridiculous SIG SAUER ACP device thing (review here), I wanted to offer a word of advice. If you have a handgun and you slap a forward vertical grip on it, the gun magically turns into a felony-worthy “Any Other Weapon” that’s regulated under the National Firearms Act. And while the tax stamp on those is only $5, it still takes 6 months to clear the paperwork. Another lovely example of the firearms laws we have here in the US, where the way something looks matters more than how lethal it actually is. So now you know. Don’t do it.