I've got an Ar-15 for sale that has a Mega Arms Gator lower with an unknown upper. The upper has the keyhole forge mark, but I've still yet to find out exactly who made it. Anyway, the gun itself has about 500 rounds through it and has a troy TRX extreme free float rail with it, it also comes with a Vltor Emod stock. I've got about 6 mags for it, 3 lancer, 3 USGI mags. The gun is in pretty good condition, some scuff marks here and there, but everything works great on it. I wish I didn't have to sell it, but I need the money and it doesn't get as much use as it should. Anyway, thanks for looking, send me an email at firstname.lastname@example.org, or a PM and I'll get back to you. Thanks. BTW, the ACOG doesn't come with it. Already sold it off!