Franklin Armory
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.
Quick Specs
- Price
- $450
- Weight
- 4.5 oz
- Brand
- Franklin Armory
- Category
- trigger
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
Capability Boosts
Recommended For
+15 more
Where to Buy
Compare current prices and availability from retailers we work with.
Franklin Armory BFSIII SP-S1 Binary Rifle Trigger, Stribog A1/A3/A3S, Curved, Black, 18-50000-BLK
Compatibility Tags
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
Compatible Platforms
Pairs Well With
Top matchesCustom
Custom Precision Rifle (R700 Footprint)
Enhances competition, range training
Ruger
Ruger Precision Rifle
Enhances competition, range training
Aero Precision
Aero Precision SOLUS Competition Rifle
Enhances competition, range training
Daniel Defense
Daniel Defense Delta 5 Pro
Enhances competition, range training
Accuracy International
Accuracy International AT-XC
Enhances competition, range training
Bergara
Bergara B-14R
Enhances competition, range training, training
Similar Products
Related Guides & Articles
Guides
Build Your Custom Configuration
Add the Franklin Armory BFSIII SP-S1 Stribog Binary Trigger to your build and see how it enhances your platform.