This is a Polymer 30-round magazine for SR-25/DPMS LR -style AR-10 rifles in 6.5 Creedmoor
Built from lightweight, glass-reinforced polymer with ProMag’s anti-fatigue chrome silicon springs and a tactile grip texture, these ProMag enhanced magazines are the perfect upgrade for your AR-10 rifle.
Keeping true to Eugene Stoner’s original design, the AR-10 delivers all the practical function of its smaller rifle cousin (the AR-15/M-16) but with a hard-hitting, full size battle rifle round. And the DPMS LR-308 pattern AR-10 is among the most flexible variants with the most available aftermarket support.