Help on DPMS Panther

I would like some help on this AR-15 please. The stamping says DPMS Panther Arms, Cal 223-5.56MM, MOD AR-15, F139XXX. It has a UTG Handrail, 2 AR-Stoner & 2 DH-Industries Mags. Looking at the pictures can anyone tell me if this is a factory gun or is a "Built" gun. Is there anything here I am not seeing in the way of add-ons. Also, if I were to put it up for sale with the hard case, four Mags and the ammo pictured, over in the Trading Post forum, what would be a fair asking price? Any help or advice would be appreciated. Thanks

Its a factory gun DPMS Sportical, worth about $600.00 to $650.00 used with the current accessories.

Does that include the 4 mags and ammo or would that add some value?

thats with all of that included

Definitely a Sportical. Main give away is the upper receiver with no forward assist or ejection port door.

Not high on the list for most but I'm sure you could find someone that would give you about what WFA said.