Here you go. Looks similar to the photo of the 03a3. Pretty clear there are two layers- inner replacement barrel and outer original "sleeve" It shoots really well and the replacement appears to be done cleanly/professionally. I think I'll keep it and chalk it up to experience.
https://www.milsurps.com/images/impo..._zpsnswv-1.jpg
https://www.milsurps.com/images/impo..._zpsibxi-1.jpg
https://www.milsurps.com/images/impo..._zpsfxwo-1.jpg
https://www.milsurps.com/images/impo..._zpsuvbt-1.jpg