16″ 5.56/.223 One Horse Express Rifle / Atrius FRS

UPC: 850078799951
SKU: OHX-AI01 Categories: , ,
(4 customer reviews)
  • Free Shipping
  • American Made
  • Atrius fRS EQUIPPED
  • WARRANTY
  • Ships by july 4th
  • Limited rifles available

MSRP: Original price was: $1,199.99.Current price is: $999.99.

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One horse express Features

atrius forced reset

Single Side Atrius Forced Reset

BREEK WARHAMMER MOD2

Ambidextrous control with improved grip and reduced gas blowback

TESTED AND TUNED

Atrius FRS fit, timed, and tested at the factory

One Horse Express SPECIFICATIONS

Selector: Atrius Single Side FRS
Caliber: 5.56mm NATO
Barrel Profile: SOCOM
Muzzle Thread: 1/2X28
Twist Rate: 1:8
Gas System: Mid-Length
Muzzle Device: A2
Handguard Length: 15” Express M-LOK
Charging Handle: Breek Warhammer mod2
Buffer Tube: Mil-Spec Buffer Tube
Grip: THRiL RTG - Rugged Tactical Grip
Stock: Thril CCS
Magazine: 30 Round Magazine
Product Weight: 7.14 lbs.
Manufacturer: One Horse
Country of Origin: U.S.A.
Customer Reviews

Reviews

Real feedback from customers who have experience with this product.

5.0
★★★★★
4 reviews
Lilly Tactical Jun 19, 2026
★★★★★

This new One Horse Express with the Atrius FRS is everything I wanted and more. Officially my first FRS rifle!!! It ran perfectly right out of the box—no tuning required. I’m so excited to start dressing it up and making it my own Proud to support Made in USA quality!!🇺🇸

Desk Pop Jun 19, 2026
★★★★★

I’ve been waiting for production rifles with forced reset selectors since Forced Reset Devices came out. One Horse has made history and nailed it—reliable, functional, and ready to run, no tweaking needed.

Cord Is Loud Jun 19, 2026
★★★★★

A GRAND RIFLE FOR THY COLONIES “SHIT WAS HEAT”

FPS Kenny Jun 19, 2026
★★★★★

It is one of the best production rifles that is FRT ready (pre installed in this case) rifles I’ve ever shot. Super sick that it comes with a H2 buffer and a low cut shelf, something I’ve been telling companies to do for ages now with the prevalence of FRT’s. Absolutely no malfunctions when running it in the third position for a full day. Insanely impressive

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