Acquired this unmarked Trapper pistol at a local show. No-one would even look at it due to the hideous triggerguard made with US M-1 Garand parts!! Add to fact it would not stay cocked also scared most away despite it was virtually new and unfired. Spent a few hours on it and added the .40 douglas barrel with captured rod i had fitted to a CVA mountain pistol. Latter just didn't feel right. Anyway I'll let the before and after pics speak for themselves. BTW the original .50 barrel will easily interchange. Should add its still not finished but it cocks fine and set triggers work well.