I am selling a Glock 27 magazine that has a +2 extension on it. It can hold 11 rounds. The magazine is a Glock brand, but I don't know what brand the extension is. It just says +2 on the bottom of it. I only loaded the magazine once to make sure that it would fit the 11 rounds. It has never been used other than that. I am asking $28 shipped for it. I will take a USPS Money Order, or you can pay me with PayPal.