Got this in a random box of gun stuff...it's a Savage magazine, for a .17HMR. From what I can tell it's for a 90-series rifle, and will work for a .22 magnum as well. It looks like a ten round to me, but may only be a 5rd..as you can tell, I don't know much about it. I can TEXT pics if you PM me a phone number. Asking $10obo. No Shipping. When I got it it had two Hornady .17HMRs in it.