Trapdoor barreled recieaver and block . The barrel is very shootable and bright and shiny for the most part first 10 inches of the throat is rough. As to be expected of a used trap barrel. The parts offered are all from different guns and or year . The timing marks on the side match up and a case chambers. That's all I i can say . Look at the pics close as there are a few handling marks,,,$275. shipped pay pal friends and family  preferably.  Selling what's in the picture  there are no more parts. US Sales only