This is an "A" model, which means it takes standard LR/SR Magpul magazines, not the proprietary magazines from Armalite. Lower was purchased some years ago from an Armalite dealer. I assembled the lower with an Armalite LPK and added some upgrades. The upper was purchased as a factory 20", test fired unit directly from Armalite when they were still in Genesco, IL. I have never fired the rifle as a unit. Everything is new. $1,800 $1,700, cash or USPS money orders. Rifle to be shipped to your FFL with appropriate insurance. IM preferred for all contact.
Upper: factory built and tested. You can see the small chip at the rear of the ejection port door and the brass transfer on the shell deflector in one of the pics.
Lower: assembled by Fox with an Armalite LPK upgrade/additions: - Larue MBT-2s FCG - Magpul mil-spec MOE stock - CAR10 XH buffer from HeavyBuffers.com - Buffer spring for the XH from HeavyBuffers.com - Buffer tube, mil-spec from Brownell's - Two, 20 round Magpul magazines included with the package