Well it's a 12 Gage barrel cut down to 18.25 with an adjustable poly choke , on a handie frame , and the surviver stock I purchased online. The 2 shortlane inserts are the only ones I bought the rest I made from barrels that I salvaged or gifts and trades, the 22k hornet is the most resent. How does it shoot , all very well as I made each one to fit the 12 Gage barrel as snug as possible, all of them will hit a pie plate or pop can at 100 yards. The 357 max is the only one I have shot out to 200 yards and was hitting a 8" steel plate over and over. Lots of fun.