LRS .22 ammo?

[skoal]

So the wife just called me she was going to order some bulk .22 for her sig and she said the cci mini mags only come bulk in a lrs? ......what the f**k is lrs? I know all the others but never heard of this?
What does lrs mean?

 

[Turkeyslayer 1300]

LR=Long Rifle

 

[skoal]

I know lr is long rifle but whats lrs? I called and asked whole sports since it on their website and they told me its different the .22 long rifle