Purchased a Select Fire 80%.
DON'T MAKE MY MISTAKE AND BUY ON OF THESE.
WAY OUT OF SPEC.
very carefully machined as per their jig and dimensions. Check and double checked.
it's so tight I can't even get the factory Ruger fire control group in with out forcing it.
Than magazine will not lock in.
I was considering buying on of the solid brass one but not now.
So out like a $200 with the tolling and their crazy shipping cost.
