rLL registered as .22?
 

So my rLL arrived at my dealer, he sent me the paperwork, and its listed as model number M15 caliber .22

will this cause me any problems with the ATF since ill be using it in a 5.56? Can I try to get it changed?

No problem that’s the way my form is and I run 223 and 7.62x39. I was advised that I could add other calibers in the additional description box or send in a letter updating the calibers used later.

A .223 is just a hot .22:grin: and you can’t make a permanent change to the link to run other calibers so I don’t think it’s necessary.