Techna Clip Pocket Mag, Fits 1 Pistol Magazine PKMAG Now you can carry any back-up magazine inconspicuously with the Universal Pocket MAG by Techna Clip. Slide any size of magazine into the Pocket MAG and clip it on to your pocket" belt or waistband. Draw your back-up mag with a simple pull while the Pocket MAG stays where you left it.