Help with scope rings...

[BOP222]

Anyone have any thoughts on type of rings these may be? There are no markings whatsoever..they came off a NcStar 3x9 scope but not sure if they were original to it or not..replaced the rings as they would not fit the base on the handle of my AR type rifle. Just curious as to what they may fit..thanks...

 

[ken22250]

not quite sure, possibly a tip-off base on a .22lr
ken