Nice option - FAB Defense Modular AR15 Magazine Couplers

This item is built well, it is sturdy and holds the magazines securely even from the bottom where it uses a small tab that slides under the magazine baseplate to keep them from slipping straight out. This coupler is a bit bulkier than the "normal" options but it doesn't add the clamping stress to your magazines either and if your not careful you can overtighten the screws and cause stress fractures on your polymer magazines possibly breaking them over the course of time. That won't happen with this coupler. I've only had this coupler a little more than a week and time will tell how durable it is but I believe FAB's coupler can have a place in your gearbag and at $14.00 it is worth it to me to find out. It is always nice to have more tools in your toolbox. Recommened.