I have purchased 2 barrels from guys on this site. They both fit my receiver percectly and I have shot one with great results, no sign of excessive headspace and good accuracy. I have not shot the second yet, hope to soon. Be sure if you do it you have a general idea of what a good fit to the receiver is and to check the head space. VERY IMPORTANT, make sure you fit the type of barrel to the proper receiver, DO NOT shoot a high intensity caliber barrel on a shotgun receiver or low pressure rifle receiver, it may not cause any problems, it may work fine, just not worth the risk, IMHO of course....<><.... :grin: