The Franklin Armory Binary Firing System trigger kit for HK 91/93/94 series rifles gives you a competitive edge on the range or in tactical scenarios. This is a 3-position trigger that fundamentally changes how you engage targets: position 1 is safe (no-fire), position 2 is traditional semi-automatic (one round per trigger pull), and position 3 is binary mode—firing one round on your pull and a second round on release. That dual-fire capability cuts your split times dramatically and lets you place two shots into a much tighter group than conventional triggers allow, which is why competitive shooters and tactical professionals favor binary triggers.

Installation is straightforward on most HK 91, 93, and compatible MP5 variants, including SP5K housings, though some firearms may need minor fitting. The trigger itself breaks at approximately 4.5 pounds and pairs with an ambidextrous safety selector that integrates into most two- and three-position trigger housings. One thing to note: the trigger housing ejector pin and ejector spring are not supplied with this kit, so check your donor housing before ordering.

Binary triggers aren't for everyone—they require discipline and understanding of local and state laws—but for shooters who want to maximize speed and accuracy in competition or authorized tactical training, the Franklin Armory system is a purpose-built upgrade. Not legal in New York, Delaware, or New Jersey.

The Franklin Armory Binary Firing System trigger kit for HK 91/93/94 series rifles gives you a competitive edge on the range or in tactical scenarios. This is a 3-position trigger that fundamentally changes how you engage targets: position 1 is safe (no-fire), position 2 is traditional semi-automatic (one round per trigger pull), and position 3 is binary mode—firing one round on your pull and a second round on release. That dual-fire capability cuts your split times dramatically and lets you place two shots into a much tighter group than conventional triggers allow, which is why competitive shooters and tactical professionals favor binary triggers.

Installation is straightforward on most HK 91, 93, and compatible MP5 variants, including SP5K housings, though some firearms may need minor fitting. The trigger itself breaks at approximately 4.5 pounds and pairs with an ambidextrous safety selector that integrates into most two- and three-position trigger housings. One thing to note: the trigger housing ejector pin and ejector spring are not supplied with this kit, so check your donor housing before ordering.

Binary triggers aren't for everyone—they require discipline and understanding of local and state laws—but for shooters who want to maximize speed and accuracy in competition or authorized tactical training, the Franklin Armory system is a purpose-built upgrade. Not legal in New York, Delaware, or New Jersey.