I don't quite understand the concept of the choke tubes. I guess I will have to go back to bass pro and have them explain it to me. I guess it looks like it just plugs in to the end of the barrel some how,yes/no? And can you remove them easyenough for when you want to use the barrel for small game again?

http://www.basspro.com/webapp/wcs/stores/servlet/Product_10151_-1_10001_94899_400004011_400000000_400004000_400-4-11