What Is Super Semi? Forced Reset Selector (FRS) Explained
Super Semi is the third selector position on One Horse Express firearms equipped with an Atrius Forced Reset Selector (FRS). The FRS is a three-position safety selector for compatible AR-pattern firearms. It replaces the traditional safety selector — not the entire fire control group.
The Atrius FRS positions are:
- SAFE
- SEMI
- SUPER SEMI
In Super Semi, the selector works with the firearm’s normal cycling so the trigger can return to a ready-to-fire position more readily between shots, while the shooter still uses familiar AR-pattern controls. Exact feel depends on the complete firearm — gas system, bolt carrier, buffer, ammunition, and related parts.
Shop One Horse Express →What Super Semi is (and what this page is about)
This page explains Super Semi and the Atrius FRS as used on One Horse Express factory firearms. We sell complete, factory-tuned Express platforms built around that selector.
We do not describe, compare, or sell competing trigger brands or related products here. If you are shopping One Horse, look for Super Semi, factory FRS, and Atrius Forced Reset Selector on our Express pages.
How FRT differs from Atrius FRS
FRT is a general term for forced-reset trigger products; it is not the Atrius Forced Reset Selector (FRS) or Super Semi. One Horse sells factory-tuned Atrius FRS / Super Semi Express firearms, not FRT triggers.
Why a selector still needs a complete system
Atrius designed the FRS as a selector for compatible AR-pattern firearms. Reliable function still depends on the rest of the gun: receiver geometry, fire control compatibility, bolt carrier profile, gas delivery, buffer and spring, ammunition, and any suppressor.
Barrel length and gas-system length change timing. Parts that “drop in” to a receiver are not automatically balanced as a complete operating system. That is why One Horse builds Express firearms as a system instead of treating the selector as a bolt-on accessory.
Why One Horse builds factory-tuned Express firearms
We engineer the One Horse Express series around the Atrius FRS: selector, fire control, gas system, bolt carrier group, and buffer/spring selected to run together.
Every Express firearm is fitted, function-tested, and live-fire validated in Brownstown, Indiana before it ships. That reduces the trial-and-error many builders face when piecing a setup together from mixed parts.
Shop One Horse Express platforms
- 16″ Express Rifle
- M81 Express Rifle
- Express Pistol (M-LOK)
- Express Pistol (Quad)
- Express .22 LR Rifle
- Express .22 LR Pistol
See all Express platforms · Why factory-installed FRS matters
Super Semi / FRS FAQ
What positions does the Atrius FRS have on Express firearms?
SAFE, SEMI, and SUPER SEMI.
Does an Express require extra tuning out of the box?
Express firearms ship function-tested and live-fire validated in factory configuration. Major changes to gas, bolt carrier, fire control, buffer/spring, or suppressor setup can affect cycling and should be evaluated separately.
Which One Horse firearms include the Atrius FRS?
The Express series: 16″ 5.56 rifles, 10.5″ 5.56 pistols, and dedicated .22 LR rifle and pistol platforms. Start at /express/.
Is Super Semi / FRS legal where I live?
Laws vary by jurisdiction and change over time. Confirm current requirements where you live and where you shoot before ordering. One Horse ships firearms only to licensed FFL dealers. This page is product information, not legal advice.
American Made. Family Owned. Veteran Owned. One Horse Express. Built to Run.™
