BFSIII® Binary Firing System® with Installation

$394.98 - $754.98
Not for civilian sales in: CA, CT, DC, DE, FL, HI, IA, MD, NJ, NY, RI, and WA
Current Stock:
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The Binary Firing System® III with Installation.


Standard turnaround time is 6+ weeks on in stock items

Simply select the trigger you wish to purchase and follow the instructions below to send in your compatible firearm*. This package includes the price of the BFSIII®, Installation performed by a Franklin Armory® Certified Armorer, test firing, and return shipping.

Additional lead times may apply:

AR-C1: 6+ Weeks

AR-S1: 6+ Weeks


AK-C1: 16+ WEEKS

AK9-C1: 16+ WEEKS

B&T-C1: 6+ Weeks


HK-C1: 16+ WEEKS

22-C1: 6+ Weeks

PC-C1: 6+ Weeks


Not for civilian sales in: CA, CT, DC, DE, FL, HI, IA, MD, NJ, NY, RI, and WA


  • Must include legible scan of State ID or driver’s license (The address on the card MUST be your current shipping address, we may only ship a firearm back to the address on your ID)
  • All firearms will only be shipped back to the address on the ID
  • Must include your order number with the shipment
  • Send your firearm to: 2246 Park Place Suite B Minden Nevada, 89423
  • Any parts removed from your firearm during installation will be returned.



  • Firearms that are unsuitable will be returned and the account credited for installation charges less any return shipping costs. 
  • Not all firearms have tolerances compatible with BFSIII® triggers. Any firearm sent in that is deemed incompatible will be returned and the account credited for installation charges less any return shipping costs. 
  • Alaska and other non-contiguous United States residents will need to pay a bit extra for shipping.  (Cost to be determined at the time it is shipped back and a credit card number will be needed at that time.) 
  • BFSIII® is NOT for civilian sales in CA, CT, DC, FL, HI, IA, MD, NJ, NY, RI, and WA 
  • Only for use in pistols in Delaware
  • NO firearms without a serial number
  • For NFA items we recommend submitting a Form 5. A copy of your stamp must be included with shipment
  • Patent No. 9,952,012 ; 9,952,013 ; 10,107,580 ; 10,393,461 ; 10,480,881 ; 10,480,882 & 10,871,340


AR Platform Exclusions:

  • Only the built Lower Receiver is to be sent in.
  • No 80% lowers, No polymer lowers, No Carbon lowers
  • No Sig Sauer MPX, MCX, or Pistol Caliber firearms
  • Lower must be built out with receiver extension, buffer spring, grip, takedown pin, and pivot pin assemblies.  If it is sent with a trigger group in it, any takeoff parts will be shipped back
  • Trigger pin size is .154"
  • All testing will be in 5.56 NATO or .308 WIN


Triggers for All Other Firearm Platforms

  • Full Firearm must be sent in
  • Magazine must be sent in with the firearm or installation service may be cancelled
  • Firearm must be in serviceable condition
  • Removal of accessories and optics is advised
  • The HK-C1 requires parts from the original trigger pack, the original trigger pack must be sent in with the firearm.
  • The firearm sent in must match the trigger installation service purchased, see list below. If you have a question about compatibility please call our customer service line, we are available to answer your questions 9am-4pm PST Mon.-Fri. Phone: 775-783-4313


*Compatible Firearms List

BFSIII® AR-C1 (Curved Trigger)

MILSPEC AR Platforms

BFSIII® AR-S1 (Straight Trigger)

MILSPEC AR Platforms


Bushmaster® ACR® Platform


AK platforms stamped or milled receivers in standard calibers 7.62x39, 5.45x39, 5.56 NATO

No Underfolding stocks or 12-gauge platforms or Arsenal firearms


AK platforms stamped or milled receivers in 9mm

No Underfolding stocks


B&T APC9, APC45, and GMH9


CZ Scorpions


HK91, 93, MP5 clones and variants