03-22-2014, 07:11 PM
I found this info as well. Thank you for looking too. I guess I'm just trying to find out what machine shop milled this upper with the P and .. underneath it. For one thing it is a great example of a forged upper. It fits very nicely in almost all of my lowers (aero, stag, s&w and vltor). No side play or wobble not that matters that much. There are no machine marks that stand out either. I just like a rattle free gun for no other reason than an attention to detail and pride. Shoots great too.