Which One Horse pistols come with a Forced Reset selector?

Three Express FRS pistols: the 10.5″ Express MLOK and 10.5″ Express QUAD in 5.56/.223, and the 12″ Express .22LR pistol. Each one ships with the Atrius Forced Reset selector (FRS) installed, tuned and test fired by One Horse. Our standard and SD pistols do not offer the FRS.

How does the Atrius Forced Reset selector work?

The Atrius FRS has three positions: SAFE, SEMI and Super-Semi. In Super-Semi the selector pushes the trigger forward after every shot, and it still fires one round per trigger pull. A single-side FRS is standard, and an ambidextrous FRS is offered as an installed upgrade on the product page.

What is the difference between the Express MLOK and Express QUAD?

Both are 10.5″ 5.56/.223 Express FRS pistols with a carbine-length gas system and a buffer and spring system tuned for the shorter barrel. The Express MLOK uses a 9.25″ Express Lock M-LOK handguard. The Express QUAD uses a 9.25″ Express Lock quad rail.

Is the 12″ Express .22LR pistol a conversion kit?

No. It is a complete, dedicated .22LR pistol with a 12.1″ rimfire barrel and the Atrius Forced Reset selector, configured and tested together at our shop. No owner tuning is required.

Do Express FRS pistols ship to my door?

No. One Horse ships firearms only to licensed FFL dealers, and retail firearm orders get free shipping to your FFL. You must be 21 or older and complete the transfer through your FFL. Check your state and local laws before you buy.

Can I finance an Express FRS pistol?

Yes. One Horse offers financing through Credova. Each pistol card shows an estimated monthly payment based on the current price. Click it to see terms.

One Horse Express · SBRs

Built To Run™

Express FRS SBRs

Short-barreled AR-15 rifles in 5.56/.223 with the Atrius Forced Reset selector installed, tuned and test fired by One Horse. Built To Run™ with SAFE, SEMI and Super-Semi.

Shop SBRs Why ExpressNew to buying online? How to Buy a Gun Online

Shop Express SBR builds with the Atrius FRS installed and tested. SBRs are NFA items: an approved ATF Form 4 and transfer through your FFL are required.

Factory fitted

Atrius FRS Installed, Tuned & Tested

Retail shipping

Free Shipping To Your FFL

NFA item

ATF Form 4 Required

Built To Run™ · Express FRS SBRs

Express FRS SBRs

Every Express SBR ships with the Atrius Forced Reset selector installed and tuned at our shop. Sale prices shown. SBRs require an approved ATF Form 4 and transfer through an FFL. Want a full-size rifle? Shop Express FRS rifles or see the full Express lineup.

5.56 / .223 SBRs

Sale

10.5″ 5.56/.223 One Horse Express MLOCK SBR / Atrius FRS

10.5″ Express MLOK SBR

SKU: OHX-ASBRS01

5.56 / .223 SBR · Forced Reset

Ships Free

$1,249.00 MSRP ~~$1,349.99~~

Shop

Sale

10.5″ 5.56/.223 One Horse QUAD Express SBR / Atrius FRS

10.5″ Express QUAD SBR

SKU: OHX-ASBRQ01

5.56 / .223 SBR · Forced Reset

Ships Free

$1,249.00 MSRP ~~$1,349.99~~

Shop

Sale

7.5″ 5.56/.223 One Horse Express MLOCK SBR / Atrius FRS

7.5″ Express MLOK SBR

SKU: OHX-ASBRS05

5.56 / .223 SBR · Forced Reset

Ships Free

$1,249.00 MSRP ~~$1,349.99~~

Shop

SBRs are NFA items and require an approved ATF Form 4. Firearms ship to a licensed FFL dealer for transfer. Check local laws before you buy. How to Buy a Gun Online

Why Express

Built To Run™

Forced Reset, installed by us

We fit and time the Atrius Forced Reset selector in every Express FRS SBR, then test fire it before it ships. No aftermarket install and no guessing on setup.

Tuned for a short barrel

Short barrels cycle hard. On Express SBRs the gas system, bolt carrier group and buffer and spring are matched to the FRS, so the SBR runs smooth in SEMI and Super-Semi.

Why factory-installed FRS matters

Made in the USA

Family-owned and veteran-owned, built with 100% US-made parts. If a One Horse product fails from a defect in materials or workmanship, we repair or replace it.

Warranty and RMA

Dealers

Stock Express SBRs at your shop

Apply for dealer pricing and stock Express FRS SBRs in your store. Approval is usually under 24 hours.

Become a Dealer