The Magpul Industries MAG556-BLK PMAG 30 AR/M4 GEN M3 Window is engineered for superior performance in AR15/M4 compatible weapons. This 30-round polymer magazine features innovative transparent windows for quick round count verification. Constructed with next-gen material technology, this magazine exceeds military specifications for strength and reliability. It is optimized for Colt-spec platforms while maintaining compatibility with various weapons, making it highly versatile for tactical operations. 30-round reliability and no stoppage Anti-glare translucent Mag Level windows on both sides of the body Painted indicator on the spring allows for easy determination Next-generation impact and crush-resistant polymer construction The anti-tilt, self-lubricating follower ensures reliability Constant-curve internal geometry & over-travel insertion stop on spine Dimensions allow for wider compatibility with non STANAG 4179 platforms Prioritize efficiency and durability with the PMAG 30 AR/M4 GEN M3 Window, your reliable choice for high-performance shooting.