Factory Ruger are your first choice, then PMI and Masen. I've used those fairly extensively in my AC556. Everything else should be avoided.

I have come here to chew bubblegum and kick ass. And I'm all out of bubblegum.

Originally Posted by safariman
I do tend to fit in well wherever I go in person.

Originally Posted by Fireball2
The campfire is the most outside exposure I get. No TV, no newspaper.