The Apex 360 round pull string magazine offers the airsoft player a higher capacity, faster winding alternative to the original winding high capacity magazine.¬¨¬®¬¨???? These magazines feature a slightly longer body (same size as a real AR magazine) with a braided wire pull string that will allow you to fully wind the magazine in 3-4 pulls.¬¨¬®¬¨???? Unlike cheaper versions currently on the market, this magazine utilizes a metal grommet in the pull string hole to ensure snag-free performance and enhanced durability.¬¨¬®¬¨???? The strong internal spring ensures¬¨¬®¬¨????smooth and consistent feeding¬¨¬®¬¨????of your electric gun regardless of the rate of fire.¬¨¬®¬¨????The Apex pull string magazine is compatible with most Tokyo Marui based M4 and M16 electric rifles.