Magazine compatibility

Different magazines and followers will have different amounts of functionality with the Catch22.

Here is an overview of the most common magazines and how they'll work.

If you have a question about a magazine not shown here, please drop us a line at info@arcatch22.com.

 

S&W 15-22 magazine with the Catch22 adapter

This offers the best functionality with the Catch22 bolt catch. With the 15-22 magazine and adapter, you will have the exact same functionality as a standard .223 AR. 

Black Dog Machine Gen III magazine

Contrary to what is said on the BDM site, this magazine will NOT offer a last round hold open like a standard AR. The spring is too weak to engage the catch and the follower doesn't extend enough to push the catch into position. You can still manually engage the catch to hold the bolt open. 

Black Dog Machine X Form magazine, CMMG 22ARC, and equivalents from other vendors

Because there is no extended follower to hit the bolt catch, the bolt catch won't be engaged automatically. The red part of the follower will hold the bolt open when the last round is fired but the bolt will drop when the magazine is removed. You can still manually engage the bolt catch to hold the bolt open. 

Black Dog Machine Gen 2 magazine and equivalents from other vendors

Because there is no extended follower, You don't get any last round hold open with this magazine. You can still manually engage the bolt catch to hold the bolt open.