lonewolf conversion barrel for the Glock 27 and Glock 33. converts either to shoot 9mm. all you need is a 9mm magazine to start shooting 9mm. I bought this used to save money on ammo. never had a single problem with it. I like the LW barrel so much that when I bought a 9mm suppressor I got the same barrel just threaded. that is the only reason I am selling this. with the price of ammo every little bit helps! barrel s in great condition. $110 is shipped. if you use paypal add 3%. if you pay with check I will wait until the check clears before shipping.