mrmeval
Like I said previously, Model 1 will probably be as reliable as any other maker, BUT, I don't like the finish on the upper. It is rough as sand paper. But for 650 total, I decided I could live with it. Model 1 did send me two of the same part in my kit and left one out, but they did fix it fairly promptly. I simply had to wait another week before I could fully assemble my AR- Pistol. I should probably take back the ,"fit", portion of my previous statement, as the Rock River lower does have a tight fit with the M1 sales upper(I think that is more of the RR lower being tight to begin with though). Model 1 will get you a base-line entry model AR, but knowing what I know now about how easy it is to piece an AR together, I would opt for more quality parts...YMMV.
PS- Oh yeah, I almost forgot. The front pivot pin detent would not fit into the lower receiver enough to seat it without taking a dremmel to it. Something I attribute to the RR lower reciever being tight, and possibly a slightly out of spec part as I didn't measure it. All my Model 1 gripes were minor annoyances, but I understood you get what you pay for...