Promag Ar-308 30 Rd Black Polymer

The ProMag AR-308 30 Round Black Polymer magazine is a domestically manufactured ammunition storage solution engineered for AR-platform rifles chambered in .308 Winchester and other AR-10 compatible calibers. This 30-round capacity magazine delivers reliable feed performance through proven heat-treated chrome silicon wire spring design, backed by ProMag's lifetime manufacturer defect warranty. Built entirely in the U.S.A. with quality-controlled assembly at every production stage, the AR-308 magazine represents a cost-effective alternative to premium offerings while maintaining operational dependability in field conditions.

The magazine's durable black polymer construction balances weight savings against corrosion resistance, critical when operating in variable environments where bare metal components degrade rapidly. The precision-wound spring assembly uses heat-treated chrome silicon wire—the same material specification found in mil-spec magazines—ensuring consistent feeding pressure across the full 30-round loading capacity. The magazine's 4.75 x 2 x 14-inch envelope provides familiar ergonomic profile for AR-pattern operators and integrates seamlessly with standard magazine pouches, tactical vests, and range carry systems designed for .308-caliber platform magazines.

This magazine suits long-range precision shooters, designated marksman rifle (DMR) users, and AR-10 platform operators conducting training, sport shooting, or duty applications. The 30-round capacity balances ammunition supply against total load weight—a practical consideration for extended range sessions or field operations where magazine changes affect tactical positioning. The easy-loading design reduces repetitive thumb strain during high-volume ammunition preparation, a notable factor during pre-range setup or ammunition staging for multi-stage competitions.

AR-308 and AR-10 magazines remain a distinct category from smaller-platform .223/5.56 magazine systems; users must verify firearm compatibility before purchase. ProMag's American manufacturing footprint and lifetime warranty program address long-term magazine replacement economics, particularly for high-round-count operators and active shooters maintaining multi-firearm inventories. The proven design and accessible pricing structure make the ProMag AR-308 a practical foundation magazine for building operational magazine pools.