Ambidextrous Forced Reset Selector

(5 reviews)

Upgrade your AR-15 with the Atrius Ambidextrous Forced Reset Selector (FRS)—"Standard Ambi." Engineered for shooters who demand speed, versatility, and precision, this drop-in 3-position safety delivers SAFE, SEMI, and SUPER-SEMI modes without requiring permanent modifications to your firearm.

Powered by Atrius Development Group's Forced Reset Technology™.

*Packaging will come in branded white bag. Please watch out for scams, copies and fakes!

$249.00

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Ships within 2 business days

Availability: Limited to 10 units per purchase

Yes, add FRS Lever Standalone for $39.99 Out of stock

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Manufactured In USA

PRODUCT SPECIFICATIONS

Precision-engineered from heat-treated 4140 steel, the Atrius FRS delivers uncompromising performance in a drop-in package. Experience forced reset technology without the wear and complexity of traditional FRT systems.

Features

Configuration: Safe | Semi | Super-Semi
Compatibility: Mil-Spec AR15 (.223/5.56/.300 BLK)
Installation: Drop-In Ready (No Modifications Necessary)
Made in the USA

Materials

Finish: Corrosion-Resistant Black Nitride
Material: Heat Treated 4140 Steel

Drop-In Installation

Swap out your factory safety in minutes and experience the next level of firearm ownership.

Runs with Mil-Spec Fire Control Groups

Seamlessly integrates with standard AR fire control groups and some cassette style triggers.

Hardcore Durability

Crafted from heat-treated, 4140 steel and coated in a corrosion-resistant black nitride finish. Rain, mud, sweat—it eats it all for breakfast.

No Modifications Necessary

No cutting your triggers. Ensures flawless function and longevity without modification.

Aggressive Ergonomics

Textured, chamfered-edge, and purpose-built design for speed. Your fingers will find the selector instantly, even under stress.

Atrius Forced Reset Selectors

Product Comparison

Product

Single Switch

Ambi Switch

Lever Blocker

Notes

FRS Standard / Single

✓ Yes

—

Standard ergonomic switch for ease of use

FRS Mil-Spec / Single

✓ Yes

—

Has mil-spec style switch

FRS Ambi

—

✓ Yes

—

Great for left-handed users

FRS Ambi G-Lever

—

✓ Yes

Has additional Geissele trigger compatibility

Compatibility

All Atrius FRS products have direct compatibility with mil-spec triggers that do not have a relief cut (U-notch).
They also are compatible with a wide variety of single-stage, drop-in / cassette style triggers as well.
The “G-LEVER” is the only FRS product that carries expanded compatibility to work with select Geissele triggers and similar products that feature a reduced hammer design.

VIDEOS

Corrosion-Resistant Coating

Advanced black nitride finish

Machined & Heat-Treated 4140 Body

Military-grade steel construction for maximum durability

Positive Positioning Detent

Precise 90° indexing with tactile feedback

Restricted States

This product cannot be shipped to the following states:

California
Connecticut
Colorado
Delaware
District of Columbia
Florida
Hawaii
Illinois
Maryland
Massachusetts
Minnesota
Nevada
New Jersey
New York
Oregon
Rhode Island
Virginia
Washington
US Territories
International

Legal Compliance

By purchasing this product, you acknowledge that you are legally permitted to own and possess it in your jurisdiction. It is your responsibility to ensure compliance with all federal, state, and local laws. The Atrius FRS is designed as a safety selector and must be used in accordance with all applicable firearms regulations. We are not responsible for misuse or violations of law.

Important Notice

This product is intended for lawful use only. Purchaser assumes all responsibility for legal compliance in their jurisdiction.

Product Reviews

from 5 reviews

5.0

4.0

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Review Lists

Likov

Mar 1st 2026

Great product

This FRT/super safety is amazing had a few issues at the beginning and I reached out to Atrius support team and they were very helpful. We figured out my little issues had nothing to do with the super safety and after I fixed them it ran perfectly have about 300 rounds through it currently and only had 1 soft hammer strike would definitely recommend.
Kyler Kellogg

Jan 5th 2026

Works perfectly!

Bought a stripped lower and assembled it specifically around this safety. Used a recommended trigger, an H2 buffer weight, and just standard parts for everything else. Threw on a PSA upper and everything works great! Don't try to flip it to super safe while the bolt is open - the lever will get pushed into the back and it won't fully switch. Just charge before switching and you'll never run into a problem! Runs beautifully, and the ambi is worth the extra cost
S. Templar

Nov 20th 2025

Works great with Rise RA140 triggers

I have now installed 3 Atrius, 2 standard and 1 ambi, using Rise RA140 "join or die" triggers on three different AR-15 lowers. Lowers from Colt, BCM, and Chelsea Firearms. All three were absolute drop in perfection. No fitting, no futzing, no challenges at all. Dropped them in, installed the Atrius safeties, BAM! Done and done. They instantly passed all the benchmark tests. I couldn't be happier about it. I know there a lot of ideas floating around about one trigger or another. These Rise 140's are three for three, for me. If you are looking for a drop-in trigger for your Atrius build... look no further. For around $100 you can get an aerospace grade trigger that absolutely rocks with the Atrius. Definitely recommend. AAA+++
Jeremy

Nov 14th 2025

Ambi selector

The safety took a good minute to finally ship. But other than that it runs great and is extremely easy to use/install as long as your trigger and lower are compatible. Definitely satisfied and it was worth the wait IMO.
Jerry Gullette

Nov 4th 2025

Updating review on selector switch

I purchased on of these a while back and had trouble getting it to work. It was my own fault, I had the wrong bolt installed. With the help of customer support this was corrected and the switch works great. I also installed # 2 buffer. Rock and roll.