About 8 or 9 years ago, I bought an action and complete forearm from a small frame 16 gauge G grade Lefever that had been confiscated by a local police department. The barrels had been sawed off to about 10" and the butt stock was cut off at the pistol grip. The police department had sold the legal parts to a local gunsmith from whom I then purchased them. He told me they would not sell him the cut off barrels. But some police departments will sell legal guns or gun parts after they no longer have any use as evidence. I called the police chief and asked him if he would consider selling me enough of the breech end of the barrels to use as a basis for sleeving. He told me they had already been scrapped. I am still looking for a set of 16 gauge barrels, but no luck yet. Even 20 gauge barrels would likely work because of those I have measured, the difference in firing pin spacing is only .004"- 005" c.t.c.