Specially for improve the speed of recharge the carbine is used enlarged retainer the magazine or, simply put, an enlarged reset button. The new retainer has several advantages over the standard steel: the enlargement length button, bending under finger arrow. With the new button when gunfire with gloves it will be possible to unfasten the magazine from the first time without misfires, also the effect on the fingers of the arrow in recharging, will be minimal. It will be possible to recharge the carbine with one hand. In conjunction with the new polymer magazine products slightly will update the appearance of the csc and would enhance technical characteristics.