Building an AR pistol is actually pretty easy and cheap, probably cheaper than most AR builds. First you need a dedicated Pistol Lower. That is a lower receiver that was built, stamped, and registered as a pistol. You dont even have to pay a tax stamp for the lower like you do on a short barreled rifle. Here is where it gets a little tricky. On an AR Pistol, there are 2 main rules you have to follow.
1) you cant have a stock, if you put a stock on pistol lower with a barrel less than 16 inches, its considered an unregistered SBR.... and illegal!
2) WHen in pistol form, you cannot attach a vertical foregrip to it. That would be considered an unregistered "Any Other Weapon" and as such, a violation of federal law!
Tada, a Spikes stamped Pistol lower:
http://www.spikestactical.com/z/index.p ... ucts_id=51
1) you cant have a stock, if you put a stock on pistol lower with a barrel less than 16 inches, its considered an unregistered SBR.... and illegal!
2) WHen in pistol form, you cannot attach a vertical foregrip to it. That would be considered an unregistered "Any Other Weapon" and as such, a violation of federal law!
Tada, a Spikes stamped Pistol lower:
http://www.spikestactical.com/z/index.p ... ucts_id=51
