Quote Originally Posted by SAnd View Post
https://arcatch22.com/products/s-w-1...atch22-adapter
I run a homemade one of these. Works great. They also make spacers that stick on the mags.
The 15-22 mags fit and work with no modifications - they're just a touch loose, but won't fall out or misfeed or anything.

Before the adapters, stick-on spacers, or clip-on shims existed you could just slap on some duct or electrical tape to make 'em fit a standard magwell more snugly.