This Jarvis P99 barrel is like new with less than 100 rounds through it. I guarantee that it is indistinguishable from a new barrel or your money back. Specifications are American 9mm standard 1/2-28. I have searched for an available similar barrel but have had little success from anyone who will actually deliver one as you will know if you have been looking for one. My asking price is $260 dollars which includes shipping and insurance or any offer close to that. I look forward to hearing from you. Best regards.