Franklin Armory BFSIII Binary Firing System Curved Trigger for AR

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Franklin Armory BFSIII Binary Firing System Curved Trigger for AR - Trigger for AR-15 - view 1
Franklin Armory BFSIII Binary Firing System Curved Trigger for AR - Trigger for AR-15 - view 2
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Franklin Armory

Overview

The Franklin Armory BFSIII Binary Firing System Curved Trigger offers a unique binary firing mode for your AR-15, allowing the shooter to fire on pull and release. This trigger features a flat trigger bow, which can enhance the shooter's control and comfort during rapid fire scenarios. Commonly found in builds with a carbine gas system and chambered in 5.56 NATO, this trigger is ideal for those looking to maximize their firing efficiency.

Specifications

MPN00-50631-BLK
Trigger BowFlat
TypeBinary
PlatformAR-15

Available Merchants(5)

Prices checked

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Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
Shipping Speed
In Stock
$386.99
BattleHawk Armory logo
BattleHawk Armory
Shipping varies
Shipping Speed
In Stock
$386.99
KY Gun Company logo
KY Gun Company
Flat rate shipping
Shipping Speed
In Stock
$386.99
Palmetto State Armory logo
Palmetto State Armory
Free shipping
Shipping Speed
In Stock
$387.99
Classic Firearms logo
Classic Firearms
Shipping varies
Shipping Speed
In Stock
$429.99

October 2026 on GunPartPicker

Franklin Armory BFSIII Binary Firing System Curved Trigger for AR ranked #31 of the 262 triggers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #29 of the 555 triggers builders have added. Builds with this trigger are split between 5.56 NATO (51%) and 300 Blackout (23%), split between mid-length (42%) and carbine-length (31%) gas systems, and mostly AR-15 (89%).

Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 5 retailers we track have it in stock. It dipped to $386.99 at Ammunition Depot for a stretch in October 2026, well under its usual $429.99, so sales do come around. Buying today, the lowest price is $386.99 at BattleHawk Armory, which matches the best price we saw in October.

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Frequently Built With

The part most often added in each category by the builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

89.1%
AR-1589.1%
AR-97.6%
AR-103.3%

Caliber

50.9%
5.56 NATO50.9%
300 Blackout22.6%
9mm11.3%
.223 Wylde5.7%
.22 LR3.8%
Other5.7%

Gas System

41.7%
Mid-Length41.7%
Carbine30.6%
Pistol16.7%
Blowback5.6%
Rifle5.6%

Builds Featuring This Part

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Builds in the community that include the Franklin Armory BFSIII Binary Firing System Curved Trigger for AR

BuildPartsTotal
SBR 8" 5.56 build
SBR 8" 5.56
24$3791.02
As a backup 18" build
As a backup 18"
16$2457.93
Radian weapons 8" build
Radian weapons 8"
20$2432.45
Smith & Wesson 18" build build
Smith & Wesson 18" build
10$4921.60

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