*** SOLD *** Up for grabs is a used complete Colt M4 upper from a local SWAT team trade-in. As such, it shows some scuffs, scratches and bumps. Complete with BCG, charging handle and ARMS 40L low profile rear sight. Muzzle device (Extended A2) has been pinned and welded. Asking $550 $500. I have conducted a good amount of business on here and other sites, to include the sale of high-dollar items such as complete rifles, handguns, upper and lower receivers, and high-end optics. Lots of positive feedback, so buy with confidence. Feel free to PM me with any questions. Thank you for your interest.