Hola,

I am still trying to build a .40 S&W upper. While I really do not care how long the barrel is I am hoping for 8" - 12" (for a pistol). What is the absolute cheapest way to build a complete upper half (minus the sights but everything else). I have a Glock lower now for 9mm and will change out the buffer/buffer spring as needed but the .40 upper is so expensive compared to 9mm. I am hoping to stay under $250. Is this even possible?

Gracias