from ColdSteel.  I am pretty impressed with the quality of the kit.  The only obivous marks on it are the centerpunch marks marking location.  The rails aren't laser cut, but they are close enough, the template and completion plans are pretty good too.  All in all a thumbs up!

Did you get the 4130 lower rails (have to request them I believe) or the standard A569 or whatever it is steel they he includes with the blanks?

I'm having some issues with the ejector rail heat treating with mine, I got a 4130 blank but A569 lower rails.  From what I've read that particular steel has under 10% carbon count and shouldn't be easily heat treatable.  In which case you either need to case harden or the ejector is useless.  I don't have any damn Kasenit to case harden mine damnit, literally don't have an extra $15 to buy any either, it's pissing me off.  

How come no one else has posted about ejector issues with the cold steel blanks?