Probably a dumb question, but will a Diamondback 4" .22 barrel fit a Trooper .22 Mark III frame? Question is that the Diamondback vent rib barrel looks like it would be slightly raised above the top of the Trooper MK III frame. I like the look of the Diamondback barrel/vent rib and would keep both barrels to return the Trooper to its original configuration if the barrel switch worked. Is this a skilled gunsmith switch, assuming thread pitch, etc. is consistent? Thanks.