The Magpul PMAG AR/M4 Gen M3 5.56x45 Magazine features durable, anti-glare windows on either side so you can see exactly how many rounds you have left. Impact- and crush-resistant polymer construction with a long-lasting USGI-spec stainless steel spring delivers years of dependable service. Internal curved design offers smooth feeding, while the anti-tilt, self-lubricating follower increases reliability. Pop-off protective cover minimizes debris intrusion during storage and transit. Over-travel insertion stop on the spine. Unique ribbed grip for easy handling. Flared floorplate. 30-round capacity. Compatible with AR-15/M4, HK® 416, British SA-80 and other platforms. Made in USA.