Franklin Armory 2037 BFSIII Binary Firing System III Trigger Equipped SE-SSP Complete AR Pistol Lower w/ SBM4 Brace
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Franklin Armory
Overview
The Franklin Armory 2037 BFSIII Binary Firing System III Trigger Equipped SE-SSP Complete AR Pistol Lower is a fully assembled lower receiver designed specifically for the AR-15 platform. Made from 6061-T6 aluminum, it features a trigger pin size of .154, ensuring compatibility with a wide range of aftermarket triggers. This lower is particularly well-suited for builds chambered in 5.56 NATO, making it a solid choice for those looking to maximize their pistol's performance with a binary firing option.
Specifications
Franklin Armory 2037 BFSIII Binary Firing System III Trigger Equipped SE-SSP Complete AR Pistol Lower w/ SBM4 Brace
Build history on GunPartPicker
Builders on GunPartPicker first added the Franklin Armory 2037 BFSIII Binary Firing System III Trigger Equipped SE-SSP Complete AR Pistol Lower w/ SBM4 Brace to a build in February 2026.
Today the one retailer we track is out of stock. Listed prices start at $39.97 at Sportsmans Outdoor Superstore for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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