Fully functional LRBHO in a standard AR style magazine that will run with the Catch 22 and lightened spring or OEM Glock safety plunger spring. The Catch 22 can be printed but I highly recommend just investing in the part, it's relatively cheap and available from Bore Buddy and other sources. I have not tested these mags with the detachable Catch 22 V2 as these were made for dedicated .22 LR setups.

These uses the inexpensive standard Black Dog 11in or 12in spring (I recommend the 12in models).
https://www.blackdogmachinellc.net/12-spring.aspx

I've tested several copies of this magazine with over a thousand rounds of use, it has never failed to lock the bolt back in my dedicated .22 setup. This is the best version yet. It will hold the bolt to the rear like a standard CMMG mag does on setups without the LRBHO.

Thanks to MrChonkers for the original idea and mag body design this ultimately came from.

Check my other content for a McFadden Lightnin Loader adapter that works with these mags.

LBRY Tags: 3d2a; dear 22; cmmg; .22 lr; ar22