A single mag holder from ESP company, designed to carry almost all type magazines for ammunition cal. 5.56 / 223 for rifles AR15 / M4 / M16 or similar. The sophisticated design with the fixation spring enables a quick drawing of the magazine during the so-called combat re-loading. Each user can himself set the desired thrust force of the magazine with use of 3 spacers supplied with the holder. The ESP company to meet different users needs produced their mag holders with several mounting systems. In this model was used a patented buckle UBC-02 that enables its fast fixation on the belt with one hand only without necessity of unbuckling the belt. Holder can be rotated on the belt by full circle of 360 degrees with 16 locking positions.