Quote Originally Posted by reaper239 View Post
with out the stock and foregrip there is no batfe involvment. with the stock and foregrip though it becomes an AOW unless you switch the barrel with an 18" in which case it becomes a full sived carbine. looking at it more though, you may not have to switch out anything since you're not actually modding the gun itself. worth looking into, but that shouldn't classify as a class 3. i'll do more research and repost.
The kit I mentioned doesn't come with a replacement barrel, so installing it would indeed convert the Glock to class 3 SBR and would require ATF approval. I've never seen or heard of a 16" barrel for a Glock, but there may be one I'm not aware of.
16" is minimum for rifle barrel and 18" for shotguns.
Yes, some gun regulations are crazy and arbitrary. I really have never understood why putting a stock on a pistol is illegal, you already have more restrictions on handguns than long guns. I only recently found out that if you add a vertical foregrip to a pistol it becomes AOW and that really makes no sense to me either.

I read in the NRA magazine about that rifle-to-pistol/pistol-to-rifle conversion ruling that was made last year. Their interpretation of the ruling was it still wasn't very clear on the legality of temporary conversions. So I guess you still have to be careful. Best advice, don't get caught. My personal opinion is if someone thinks an illegal/gray area legal conversion would be useful in a SHTF situation, they should have the parts on hand. I'm pretty sure it wouldn't be illegal to possess the conversion parts as long as you don't put them on. Then, if the SHTF, most laws can be thrown out the window, so do what you gotta do.