Franklin Armory BFSIII SP-S1 Stribog Binary Trigger
Binary firing system for Grand Power Stribog: one round on pull, one on release with a three-position safe/semi/binary selector.
- Price
- $450
- Weight
- 4.5 oz
- Brand
- Franklin Armory
- Category
- Triggers
Featured in
Features
- •3-position selector (safe / semi / binary)
- •Fires one round on pull, one on release in binary mode
- •Curved trigger shoe (SP-S1)
- •Drop-in factory replacement
- •Stribog A1 / A3 / A3S compatible
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Franklin Armory BFSIII SP-S1 Binary Rifle Trigger, Stribog A1/A3/A3S, Curved, Black, 18-50000-BLK
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90-day low $449.99More PCC guides & articles
Guides
Overview
The Franklin Armory BFSIII SP-S1 is the binary trigger upgrade for the Grand Power Stribog. In binary mode the trigger fires one round when pulled and a second round when released; the three-position selector lets the shooter switch between safe, standard semi-auto, and binary on the fly. Moving the selector to safe before releasing the trigger aborts the release shot, which preserves a safe stop in the event of a misidentified target.
Drop-in fitment covers the SP9A1, SP9A3, and SP9A3S Stribog variants. The unit ships with a curved trigger shoe (S-S1 designation; Franklin also makes a flat-faced CZ-style shoe for the Scorpion BFSIII but the Stribog kit is curved-shoe only). Installation reuses the factory pins and takes 20-30 minutes for a competent home gunsmith.
State restrictions vary and must be checked before purchase. The BFSIII is the most expensive Stribog trigger upgrade in the catalog by a wide margin and is not appropriate for any duty or defensive use case; it is a range and competition tool that doubles practical rate of fire.
Key Features
- Binary firing system: one round on pull, one round on release
- Three-position selector: safe, semi, binary
- Curved SP-S1 SKU
- Curved trigger shoe (SP-S1)
- Abort release shot by moving selector to safe before release
- Drop-in install retains factory pins
- Compatible with Stribog SP9A1, SP9A3, SP9A3S
Pros
- +Doubles practical rate of fire for range and competition
- +Three-position selector preserves normal semi-auto operation
- +Drop-in install across A1, A3, and A3S variants
Cons
- −Most expensive Stribog trigger upgrade by a wide margin
- −State restrictions vary and must be checked against current law
- −Not appropriate for any duty or defensive use case
- −Reset feel is different from standard, requires retraining
- −NOT compatible with HBI Short Stroke Buffer; HBI rates the buffer for semi-auto only
- −10mm and 45 ACP Stribog variants not supported
Detailed Specifications
- type
- Binary firing system (3-position)
- classification
- Binary firing system; verify current legal status before purchase
- shoe
- Curved (SP-S1)
- install
- Drop-in, retains factory pins
- compatibility
- Stribog SP9A1, SP9A3, SP9A3S
- stateRestrictions
- State restrictions vary; verify current law before purchase.
- sku
- 18-50000-BLK
- madeIn
- USA
- msrp
- $449.99
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Add the Franklin Armory BFSIII SP-S1 Stribog Binary Trigger to your build and see how it enhances your platform.