If you buy the huntsman combo 50 cal. / 243 win. you will get the sb2 reciever and then you can add any barrel you want to it , thats what I did and now I also have a 308 which will kick pretty good with full power loads so be careful what you order maybe consider the 30-30 next time , more power is felt on both ends of a gun for hunting it's not a problem but an after noon at the range makes you wonder why .