Franklin Armory Binary Trigger System for HK MP5 91/93 - Free Drum w/Purchase

In stock

Warning: BFSIII is NOT for civilian sales in CA, CT, DC, DE, FL, HI, IA, MD, NJ, NY, RI, and WA

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Warning: BSFIII is NOT for civilian sales in: CA, CT, DC, DE, FL, HI, IA, MD, NJ, NY, RI, and WA


The BFSIII™ for HK is a 3-Position Trigger. In position 3 it will fire 1 round on Pull and 1 round on Release. This makes it the fastest semi-automatic trigger on the market. The BFSIII™ is ideal for Tactical and Competition use. The BFSIII™ provides greatly reduced split times between rounds and the ability to place two separate shots into a tighter group.

Trigger Operation:

Position 1 – Safe –Will not fire.

Position 2 – Semi – Fires 1 round per pull.

Position 3 – Binary – Fires 1 round on pull and 1 round on release.

NOTE: We do not accept returns on opened products

* A trigger pull around 4.5 pounds.

* Ambidextrous Safety Selector.

* Safety Selector will fit in most two and three position trigger housings.

* Works in SP5K housings.

* Trigger housing, ejector, ejector pin and ejector spring are not included.

* Will fit most HK 91, 93, & MP5 variants and clones

* Some firearms may require additional fitting

* MSRP $699.99


More Information
ManufacturerFranklin Armory
Action TypeSemi-Automatic
Recoil PadNo
Metal FinishBlack (Matte)
Manufacturer Part Number5603A
CA LegalNo
CO LegalYes
MD LegalNo
NY LegalNo
CA Prop 65Yes

We found other products you might like!