Franklin Armory BFSIII Aluminum Lower Receiver for M4 Black Anodize

The Franklin Armory BFSIII Lower Receiver is expertly engineered for M4-style rifles, offering a high-performance platform equipped with the renowned Binary Firing System trigger. Constructed from forged 7075-T6 aluminum and finished in Type III hard coat anodized black, this lower receiver delivers superior durability, fit, and finish. Designed for tactical versatility, it includes a reinforced M4-style six-position collapsible stock, an A2 pistol grip, stainless steel magazine with Marlube coating, and advanced sling mount options for optimized maneuverability.

Key Features

• BFSIII Binary Trigger System: Enables fast, reliable firing with shots fired on both pull and release for enhanced tactical capability.
• Forged 7075-T6 Aluminum Construction: Built for extreme durability and strength while keeping weight to a minimum.
• Black Hard Coat Type III Anodized Finish: Provides a rugged, corrosion-resistant surface for long-lasting use.
• Specialized Tension Screw: Eliminates upper and lower receiver play, ensuring a tight, precise fit and improved accuracy.
• Reinforced Six-Position M4 Stock: Adjustable for user preference, with an angled heel for smoother shouldering and faster transitions.
• Multi-Point Sling Mounts: Multiple rear sling attachment options provide flexible carry configurations.
• Aluminum Carbine-Length Receiver Extension: Lightweight and strong for reliable stock support.
• 30-Round Stainless Steel Magazine: Durable Marlube finish with anti-tilt follower; also available in 10/20 or 10/30 round configurations for restricted states.
• A2 Pistol Grip: Ergonomic and familiar design ensures comfort and control during operation.

Specifications

• Brand: Franklin Armory
• Model: BFSIII
• Category: Lowers
• Firearm Fit: M4
• Receiver Material: Forged 7075-T6 Aluminum
• Receiver Finish: Black Hardcoat Type III Anodized
• Trigger: Binary Firing System (BFSIII)
• Grip Type: A2 Pistol Grip
• Stock Type: M4 Six-Position Collapsible, Reinforced with Angled Heel
• Stock Finish: Black
• Receiver Extension: Carbine-Length Aluminum
• Magazine: Stainless Steel, Marlube Coated, 30-Round (10/20 or 10/30 Available)
• Magazine Features: Anti-Tilt Follower

Conclusion

• The Franklin Armory BFSIII Lower Receiver is a top-tier choice for shooters demanding speed, reliability, and precision in their M4 build. With its forged aluminum construction, advanced binary trigger system, and tactical enhancements like a reinforced collapsible stock and tension screw fitment, this lower receiver delivers mission-ready performance. Whether for defense, competition, or recreational shooting, this component sets a new standard in AR platform upgrades.