Whats up Clarksville? I am a small dealer in Pleasant View TN. Exit 24 off of I24 so just south of you by 20 miles. I did a UMP conversion many years ago and back then a big name in UMP conversions was H.D.P.S. Don't know if they are still helpful but maybe someone else can chime in. Contact me if you would like to stop by some time and shoot the bull.