Presenting the Arcturus AR Mod 1 M4/M16 30/130 Round Variable Midcap Windowed EMM Magazine Black. From the house of Arcturus, known for quality airsoft accessories, comes a magazine that is going to be versatile and adaptable to your loadout. The high-quality polymer used in this magazine makes it tough and rigid enough to survive on the field for years. What's very cool about this mag is the variegated capacity to run either 30 or 130 rounds that are easy to set to your gameplay needs. That flexible function is also available to fit in tight compartments or handle long engagement, hence providing you a tactical edge. The Arcturus AR Mod 1 Magazine is cross-compatible with most M4/M16 airsoft rifles, therefore being a top choice for most airsoft fans. Windowed construction lets you easily and quickly see how many BBs are still in the chamber, so you are never caught unprepared. Whether you are running a CQB short skirmish or a long, intense Milsim operation, this magazine will not let you down. Get the Arcturus AR Mod 1 M4/M16 30/130 round variable mid-cap windowed EMM magazine today and conquer the battlefield in style.