The Mission First Tactical EXD Windowed Magazine utilizes advanced material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed demanding military performance specifications. Durable dual-side anti-glare transparent windows with numerical markers and high viability indicator coil on the spring allow quick visual identification of the approximate number of rounds remaining. Designed for the AR15/M4 but allowing use with a wide range of non-AR15/M4 platforms. FeaturesDual-side windows with numerical markersHigh visibility coil on the springNext Generation Long Glass Fiber PolymerEnhanced Strength & DurabilityRibbed front and rear gripping surfaceTool-less disassembly with double floor plate safety release tabsLong-life USGI-spec stainless steel springFour-way anti-tilt self-lubricating followerFlared floor plateOversized bolt catchPaint Pen dot matrix