Catch22 S&W 15-22 Magazine Adapter for Standard AR Lower - (Clip on)
The AR Catch22 clip-on magazine shim can clip right onto your lower for a quick and easy way to shim the magazine and take up the slack in the mag well. The clip is easy to install and remove and it allows you to use your standard S&W 15-22 magazines in your standard AR lower without any modification.
With the 15-22 magazine adapters, the S&W 15-22 magazine will work great with the Catch22 to provide true last-round-hold-open functionality.
One adapter is needed per lower.