Are binary triggers legal in Pennsylvania (2026)

Binary triggers you can buy in Pennsylvania

Legal in Pennsylvania.One round on the pull, one on the release, with no state rate of fire statute in the way here.

Most picked by builders

Live prices

1
17% of binary trigger build picks
Franklin Armory BFSIII Binary Firing System Curved Trigger for AR Compare 5 stores
$386.99at BattleHawk Armory
$386.99at BattleHawk Armory
2
17% of binary trigger build picks
Franklin Armory BFSIII CZ-S1 Binary Trigger - 06-50026-Black Compare 3 stores
$467.99at BattleHawk Armory
$467.99at BattleHawk Armory
3
17% of binary trigger build picks
Franklin Armory BFSIII HK-C1 Binary Trigger - 05-50000-Black Compare 4 stores
$629.99at BattleHawk Armory
$629.99at BattleHawk Armory
4
12% of binary trigger build picks
Franklin Armory BFSIII AR-Essential Curved Binary Trigger - 00-50633-Black Compare 4 stores
$159.99at Palmetto State Armory
$159.99at Palmetto State Armory

Ranked by how often builders add each one to a build on GunPartPicker, across every build. In stock only, prices update hourly.

Find one that fits your gun →

Not legal advice. Confirm your own configuration before you buy. All Pennsylvania gun laws

Which binary trigger fits your gun?

Pick your platform. Each one lists what the gun needs to run a binary trigger and the ones the catalog carries for it, in stock first.

Binary triggers for the AR-15: 9 in the catalog, 5 in stock

Full auto profile bolt carrier (M16 cut) for a forced reset trigger; most binary triggers run on a semi carrier
Mil-spec lower with standard 0.154" pin holes
H2 or H3 buffer and a fresh spring so the carrier does not outrun the reset

Ranked by what builders add most, in stock first. One listing per model.

Franklin ArmoryFranklin Armory BFSIII Binary Firing System Curved Trigger for AR

$386.99In stock

FostechFostech Outdoors, Llc. Ar-15 Ar Ii Echo Drop-in Binary Trigger

$296.40In stock

Franklin ArmoryFranklin Armory BFSIII AR-Essential Curved Binary Trigger - 00-50633-BLK

$159.99In stock

Franklin Armory AR-ELITE AR-15 Binary Trigger, Limited Edition, Includes Crimson Red Curved and Flat Trigger Bows & Safety Lever - 00-50631-CRM

Franklin ArmoryFranklin Armory AR-ELITE AR-15 Binary Trigger, Limited Edition, Includes Crimson Red Curved and Flat Trigger Bows & Safety Lever - 00-50631-CRM

$249.99In stock

See all 9 for the AR-15 →

What the Pennsylvania statute says

Pennsylvania's offensive weapons law

18 Pa.C.S. § 908

“Any bomb, grenade, machine gun, sawed-off shotgun with a barrel less than 18 inches”

There is no statewide binary trigger law, and Pennsylvania leans on the federal machine gun definition, which treats the pull and the release as two functions. Locally it is less clean: York City's 2025 ordinance names binary triggers among banned rapid fire devices, though it may not survive the state preemption law.

Statute text checked October 3, 2026. Quotes are the statute's own words.

Pennsylvania law in detail

Pennsylvania is not on our list of states banning binary triggers, and has no rate of fire or multiburst trigger activator statute we read as covering them.
Binary triggers are not federally regulated: one round on the pull, one on the release, still one round per function of the trigger.

The federal rule

A binary trigger fires once on the pull and once on the release. It is not regulated under federal law, but several states ban it under statutes aimed at rapid fire devices, multiburst triggers or trigger activators.

Binary triggers in neighboring states

Next steps

Frequently asked questions