I would like to thank Jim and Brenda from NSS and CBI for the wonderful service and great barrel they sent me (28" criterion bull barrel). They were very helpful with any questions I had and very honest,refunded $4.00 shipping charges, which most companies wouldn't care to do. I would do business with them again in a heartbeat. The CBI barrel installed very easy and is shooting like a dream. I cant wait to stretch its legs. thanks again