300 Blackout PMAG GEN M3 30 Round Magazine for AR Platform by Magpul – High-Performance .300 BLK Polymer Magazine

Enhance your AR platform with the Magpul PMAG GEN M3 30-round magazine, purpose-built for .300 AAC Blackout performance and reliability. Designed with advanced polymer construction and optimized internal geometry, this magazine delivers consistent feeding for both supersonic and subsonic ammunition, making it ideal for tactical use, hunting, and range applications.

Key Features and Benefits

• Optimized for .300 AAC Blackout
Engineered specifically for .300 BLK cartridges to ensure reliable feeding and reduced malfunctions with a wide range of bullet profiles

• GEN M3 Advanced Polymer Construction
Durable, impact-resistant polymer body designed to withstand extreme conditions, drops, and heavy use

• 30-Round Capacity
Full-capacity magazine ideal for extended shooting sessions, training, and defensive applications

• Reinforced Feed Lip Design
Enhanced feed lips provide long-term durability and maintain consistent feeding performance over time

• Anti-Tilt, Self-Lubricating Follower
Improves feeding reliability while minimizing friction and preventing jams

• Aggressive Textured Grip
Non-slip surface allows for secure handling in wet, muddy, or gloved conditions

• Paint Pen Dot Matrix Panels
Allows easy identification and marking for load management or organization

• Over-Travel Stop
Prevents over-insertion into compatible firearms, protecting both magazine and rifle

• Flared Floorplate
Supports quick, positive magazine handling and faster reloads

Technical Specifications

Caliber Compatibility: .300 AAC Blackout
Capacity: 30 Rounds
Platform: AR-15 / M4 Compatible
Material: Advanced Impact-Resistant Polymer
Follower: Anti-Tilt, Self-Lubricating
Finish: Matte Black (varies by model)
Weight: Approximately 5 oz unloaded
Overall Height: Approximately 7.5 inches
Compatibility Note: Designed for .300 BLK; limited compatibility with 5.56 NATO, not recommended for primary use

Performance Advantages

Designed to eliminate common feeding issues associated with .300 Blackout ammunition, this magazine provides consistent reliability in high-stress environments. The advanced internal geometry supports smooth cycling, while the rugged polymer construction ensures long-lasting durability under demanding conditions. Its user-focused design enhances handling, reload speed, and operational efficiency.

Usage Instructions

Load cartridges by pressing downward and rearward into the magazine body, ensuring proper alignment. Insert firmly into a compatible AR platform until it locks into place. Perform a function check prior to use. Clean periodically using a dry cloth and avoid over-lubrication to maintain optimal performance.

Warranty Information

Backed by Magpul’s commitment to quality, this product is covered by a limited manufacturer warranty against defects in materials and workmanship.

Ideal Applications

Perfect for tactical shooters, hunters using .300 Blackout platforms, range enthusiasts, and home defense setups requiring dependable magazine performance.