These are marked "Sig Sauer 522" but they are actually made by Black Dog Machine and will work with any AR-22 that uses a Ciener/Atchisson/CMMG/Taccom type bolt.
https://www.sigsauer.com/store/r522-25rd-22lr-magazine.html
Basically, if your .22LR AR uses this type of bolt, these mags will work and they work GREAT.
I've run these mags with my dedicated .22lr upper for several years and have never had a magazine related failure.
https://www.sigsauer.com/store/r522-25rd-22lr-magazine.html
Basically, if your .22LR AR uses this type of bolt, these mags will work and they work GREAT.
I've run these mags with my dedicated .22lr upper for several years and have never had a magazine related failure.