Saskatoon Gun Works carries Aero Precision bbls. Fit, finish and over-all quality is typical Aero - Excellent.
I'm really impressed and happy I chose it to do a Mk18 clone/look-alike over the twice as expensive DD 10.3" bbl. I could've bought two Aero 10.5" bbls for the price of one DD 10.3", which I don't get..twice as expensive (in some places) for .2" less?