Gun went together fine, proof tested first trip to range. Recommend FAC examine locking shoulder leg hole. Non-critical problem. Overall very nice for a casting. Subsequent to first publishing this review, I have assembled two other rifles on this receiver and experienced no additional difficulties. There is some question on the height of the vertical pad on the left of the chamber. This contacts a corresponding pad on the bolt carrier and appears to be the only critical dimension. The rest of the area is relieved more than a standard FN, however I am not prepared to say this is “wrong” just “different”. I will gladly build on this receiver – a nice job in the tradition of other fine Coonan products (he is no newcomer to the gun industry).
I have also had the opportunity to examine a Dan Coonan (DC) gas piston. Very nicely done, dimensionally correct, with a superior polish and chrome plating. Clearly and neatly engraved.
There are a number of “new” DCI receivers that hit the market in late 2008. Dan told me at the 2008 SAR show that these were receivers that were initially set aside due to one problem or another, and that he went through and corrected any issues they had. I have not yet seen one.