Lone Wolf Distributors.....
Lone wolf makes AR lowers that use Glock magazines. Their current offering uses Glock 9mm .40 S&W/.357 Sig magazines. They are planning a 10mm/.45acp version early next year.
I recently built a 9mm carbine with a Glock fed Lone Wolf lower and a Rock river upper. It's accurate enough, but needs a little breaking in yet.