Dedicated 22LR AR Upper

[Craftsman 441]

I'm collecting parts and tools to make a dedicated 22LR AR upper and I don't know what way to go with the chamber. What reamer do you reccomend I use, since it will be a semi-auto that will be firing mostly bulk ammo.

 

[Craftsman 441]

Ok, a Bentz spec .22LR chamber was the answer to that one.

 

[Craftsman 441]

Now, does anyone know where I can get a .22 rimfire stainless steel 1/16" twist barrel blank?