7.5 Inch Gas Piston AR15 Pistol Upper 7.62X39

I have a 7.5 inch pistol upper for sale. The barrel is a Alpha Shooting Sports 7.5" in 7.62X39. The feed ramps have been modified similar to the Bushmater 7.62X39 barrels and it feeds all 7.62X39 ammo I have tried including HP and SP rounds. It has an Adams Arms retro fit gas piston kit installed. It does not come with a bolt or bolt carrier or charging handle. The parts needed to convert your carrier are included. It has a Samson 4" Star hand guard and a AR 15 Performance brake. The upper receiver is a Spikes. The sum of all the individual parts is around $650 and I am asking for $400 shipped