Tru-test ( just like the stevens 87A ) .22 lr. These specific "Gill guns" were made between the later 1930s to 1960 (war era). ( So even if it was the very last one made it's still 66 years old) These can be operated as single shot or semi automatic simply by pushing in or pulling out on the charging handle. I've had this for quite a while and put probably between 500 and 1,000 rounds of 22 through it and it will feed shoot and eject all of them from federal to Winchester to CCI to Aguila etc. one of if not the most dependable tube fed Sim Auto I've ever had which is why I kept it all these years. $200 cash call or text 785-259-8140 or message me on here. Thanks. I'm headed to Cawker City to be there at 3:00          ( today Sunday )to pick something up and then coming back to Hays if that helps anyone interested in any of my listings.