|An AR-15 General Purpose Pistol concept.|
It utilizes a 12.5" barrel on a pistol lower.
Lately I have been thinking a lot about AR Pistol possibilities. I have been using the online Gunstruction app to develop these ideas visually. Generally the idea is the same, using four different calibers: .22lr, 5.56 NATO, .308 WIN, and 9mm. The way I see it, the biggest advantage of an AR pistol over a SBR (short barreled rifle) is the ability to transport it anywhere as a pistol without the necessary transport paperwork that a SBR would require.