The PMAG 30 AR/M4 GEN M2 MOE Window is a 30-round 5.56x45 NATO (.223 Remington) AR15/M4 compatible magazine that offers a cost competitive upgrade from the aluminum USGI. It features an impact resistant polymer construction, easy to disassemble design with a flared floorplate for positive magazine extraction, resilient stainless steel spring for corrosion resistance, and an anti-tilt, self-lubricating follower for increased reliability.
Works well with my M&P Sport II.
These magazines were a great price and they fit perfect in my Ruger AR-15 8514. Shipment was within 3 days and with no issues.