I bought a Tactical Industries TargetMaster .22lr conversion kit last December. I have had a lot of fun with it until yesterday. I started to have some feeding malfunctions. When I released the magazine, I noticed that back end of the mag had a big piece of plastic broken off. I guess it let the mag slop around too much. Anyway, I e-mailed Edward Vance at Tactical Industries and told him what had happened. Got an e-mail from him early this morning telling me that a new magazine was on it’s way to me and contact him again if I had any more problems. Good company and good customer satisfaction. Just wanted to pass this along in case anyone was considering a .22lr conversion.