From Brownells. I bought a lower receiver for a AR .308, a box of .308 ammo (20 rouunds) and 50 rounds of .22LR. Ammo is out there, you just gotta find it
Champions here in College Station had 9 mm ammo. I picked up 2 boxes today when I grabbed some FFL items I had shipped in. They had 9 mm pistols for sale too if anyone is interested