Originally Posted by LWD Armorer
Our AR lowers will work with 9mm, 40S&W, and 357 sig uppers. I do not think anyone yet builds uppers in 357 sig. But you can find 9mm and 40 S&W top ends.
I would really like to see a pistol cartridge carbine (one of these lowers) chambered in something like 10MM, .40 Super, .460 Rowland.
Now I would really like to see a small PDW style Semi auto Bullpup chambered in 10MM, .40 Super.