The PMAG 30 Gen M3 is the standard

The Magpul PMAG 10 Gen M3 magazine is a 30-round 5.56x45mm NATO (.223 Remington) polymer magazine for AR-15/M4 compatible weapons. Designed to work flawlessly every time, no matter what conditions you encounter, this is the best replacement or spare AR-15 magazine.

Along with an expanded feature set and compatibility, this PMAG 30 magazine incorporates new material technology and manufacturing processes for enhanced strength, durability, and reliability to exceed rigorous military performance specifications. A redesigned bolt catch notch in the rear of the magazine provides increased bolt catch clearance, while an over-travel stop on the spine helps ensure the magazine will not over-insert on compatible weapons.

Magpul PMAG 30 Gen M3 Magazine Specifications and Features:

• Manufacturer Number: MAG556-BLK
• Magpul PMAG AR-15 Magazine
• Caliber: .223 Remington, 5.56mm NATO
• Capacity: 30 Rounds
• Body Material: Polymer
• Spring Material: Long Life USGI-Spec Stainless Steel
• Follower Material: Self-Lubricating Polymer
• Baseplate Material: Polymer
• Constant Curve Design
• Anti-Tilt Follower
• Flared Baseplate
• Ribbed Gripping Surface
• Over-Travel Insertion Stop on the Spine
• Paint Pen Dot Matrix Panels on the Bottom of the Body for Marking
• Windowed
• Made in the U.S.A.
• Finish: Black

Fits:

• Most AR-15/M4 platforms
• HK 416
• HK MR556A1
• HK M27 IAR
• British SA-80
• FN SCAR MK 16/16S