It's been used. Still in great condition, except for the surface of the buffer, as you can see from normal wear. Has about 700 rounds through it. Has trap door. Includes spring, buffer, and tube. Does not include any detent and detent springs.
Asking $40 shipped using USPS Priority.
Local pick up is fine if located near Seattle, WA.
Will accept paypal or MO. No personal checks.