Franklin Armory BFSIII M4-BLR Binary Lower Receiver

Description

The Franklin Armory BFSIII M4-BLR is a complete M4-style lower receiver built on a forged 7075-T6 aluminum platform and equipped with Franklin Armory’s BFSIII (AR-ESSENTIAL) binary-capable trigger. It ships ready with an A2-style pistol grip, a reinforced six-position M4 collapsible stock, and a 30-round steel magazine. The design includes a specialized tension screw to reduce upper/lower play and a hard-coat Type III anodize finish. This lower is suited for range, duty-style, and home defense configurations where binary-equipped triggers are permitted.

Key Specifications

• The receiver is constructed from Forged 7075-T6 aluminum.
• The finish is Hard Coat Type III Anodized.
• The trigger system is a BFSIII AR-ESSENTIAL binary trigger.
• The package includes one 30-round steel magazine.
• Designed to fit M4 configuration lowers and components.
• The grip provided is an A2 pistol grip.
• The stock is a reinforced six-position M4-style collapsible stock.
• Includes a specialized tension screw to reduce upper/lower play.
• The listed weight is 3.3 (manufacturer data).
• ATF model designation is FAI-15.

Whether assembling a range rifle or a duty-style platform, this lower provides a durable forged foundation and an integrated binary-capable trigger system for users who require that functionality where allowed. The combination of forged construction, tensioning hardware, and M4-style ergonomics makes it a practical choice for builders seeking a ready-to-install lower receiver.