Twin Mag Lock - Patented Zytel coupling system that locks 2 - 10 round magazines, creating a total of 20 rounds in a single pack
This combo pack includes two AR-15 Magazines and the Coupler Lock.
Posted by James Clarke on 11th Jun 2020
Nice to have 20rnds (dual 10s) and still be compliant with the NYS STUPID Act.
Thanks Thermold for giving those who can't just move out of NY a fighting chance!
Oh, and yes, they work with no issues.
Posted by Ed on 3rd Apr 2018
Works with my ACR, easy to load with magazine charger