I have several AR15/M16 USGI 30 round mags. These mags that have been used, but have been brushed out, and to ensure proper feed and function, a new mag spring and green follower has been installed. They have been tested to ensure that they are drop free from a mil. spec. weapon when empty. All mags are USGI contract mags and include Adventure Line / Parsons, Center Industries, FN, LaBelle, and Sanchez. NO CHOICE OF MANUFACTURER. There are no Cooper mags. (Please Note: Don't be fooled - ALL USGI contract mags, 20 or 30 round, for the AR15 / M16 are made of aluminum. If a mag body is made of steel, or parkerized (you can only parkerize steel) they are not USGI Contract mags for the AR15 / M16. Additionally, there has NEVER been a CURVED 20 round USGI Contract mag for the AR15/ M16. I don't care which floorplate they transfer to the mag.) Can't ship where prohibited. $5.00 shipping to the lower 48 for 1 to 4 mags. I take money orders, & cashier's checks, If you have questions, e-mail me at firstname.lastname@example.org. Thanks.