High quality, not much money. - UTG Pro AR308 6-position Receiver Extension Tube

Received a complete lower assembly from a seller, unfortunately it had installed a standard length extension tube and as a result the weapon would not feed. Ordered this tube due to its length 7.9 inches as opposed to the standard 7 inch length and upgraded the buffer spring that came with the lower with a JP buffer spring tuned for .308 use. Easy installation of the tube itself and the 6 positions are engaged by the butt stock securely and with no hassles. I was also gratified to see the "Made in the USA" label on the tube as well. UTG did a good job with this one, the rifle runs great.