Magpul Industries PMAG.

SPECS:

• Engineered from the ground up to be made of injection molded polymer.
• Patent Pending design allows for a more aggressive constant curve of ammo stack than found on other Nylon magazines.
• Made of "new to the market" reinforced polymer which is very strong and durable.
• Can be seated on closed bolt with full 30 rounds loaded.
• Snap cover protects feed lips during long term storage.
• Optional maglevel window version that can be read from both sides.
• Floorplate lock.
• Proprietary anti tilt follower.
• Debris grooves built into mag body.