This is a magazine extension that increases the magazine capacity from 5 to 7 rounds and also allows a round in the chamber with 7 in the magazine. These are made from chopped carbon fiber filament in a specialized 3D printing process, the adapters are equal in strength to aluminum with increased flexibility to withstand stress without damage. These have been tested with the old style magazine and the new magazine with the small spring and both worked flawlessly. Please see my installation video on YouTube for installation instructions @ Mercy Less Lethal 603
These are currently made to order, please allow extra time for your order to be fulfilled. Thank you for your patience as we work hard to bring you new and exciting products.