They make the tnw carbine in 460 Roland also but I don't want to fool with another caliber .I can shoot the same bullets in my 40sw pistols or carbine .It only weighs 5.5 pounds and is really short with a 16.25 inch barrel .I want a 18 inch 10 mm barrel which they also make .It has no recoil and would be good to train kids or women .I wanted it because I am getting older and my 10 pound rifles are a lot heavier these days .I can't wait to shoot it with a nice scope .I have heard of a lot of these carbine shooting 1 inch groups at 100 yards .It is about like a super 1022 ruger size and weight wise .I have wanted one for a while .Its a blowback action so it's pretty simple .Its kinda like a semiauto contender with the interchangeable barrels .