The two-piece modular construction of the 20 and 30 round magazine allows for maximum strength and integrity to be achieved while simultaneously allowing the magazine to drop free as well as solve feeding issues. The straight upper piece of the magazine allows the magazine to drop free while also presenting ammunition to the chamber in perfect form. The curved lower portion of the magazine allows the remaining rounds to stack naturally which breeds precise feeding. The functionality of the magazine is only half of the battle, this magazine is constructed from the latest aerospace polymers which are impervious to the detrimental effects of solvents and lubricants. The waffle style molding on the exterior of the magazine helps ensure a positive grip. Note: The 5 and 10-Round magazines are the same size as a 30-Round but feature a built in stopper in order to meet the requirements and regulations for some states as well as for hunting in some areas.