Uncompromised quality, performance and the durability to last a lifetime. The X-14 is a .308 caliber 50 round drum built of the highest grade materials to give it unparalleled function and rigidity. Engineered using our proven coil magazine technology, which allows side by side staging of ammo in a single stack. The streamlined design allows for no separation of ammunition during function, preventing malfunctions and lending to it’s compact design. Our patent pending tension relief device allows the X-14 to operate nearly unlimited spring loads, allowing it to function in weapons with capabilities 850 rounds per minute. The profile is shorter than a standard 30 round. Magazine easily loads and unloads by operating the front operating wheel. Magazine includes a lifetime warranty and instruction manual. Mag Tower In Accordance With USGI Drawing 7790181. Note: Magazine will fit all M1A M14 rifles with modified and non modified chassis except the JAE M1A/M14 Sniper Stock and Archangelstocks.