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The Atrius Development Group Ambidextrous Forced Reset Selector takes a smart shortcut to forced reset performance. Instead of replacing your trigger the way a traditional FRT does, it swaps out your safety selector. That means you keep the mil-spec trigger you already trust and gain a third position that mechanically drives the trigger forward into reset using the rearward motion of the bolt carrier group. The result is a fast, rhythmic cadence once you get in the groove, without the internal wear and complexity that comes with dropping in a whole forced reset trigger.
This is a three-position selector: Safe, Semi (your normal trigger pull), and Full-Semi. It runs a crisp 90-degree throw with positive detents, so each click is tactile and there's no mushy guessing between positions under recoil. The selector faces are textured and chamfered, which makes finding it fast even with gloves or in a hurry. Being fully ambidextrous, it works equally well off either shoulder, which is a real advantage for lefties and anyone running barricade or off-hand drills.
The selector is machined from heat-treated 4140 steel with a corrosion-resistant black nitride finish, so it holds up to range abuse, weather, and hard use without complaint. It's compatible with mil-spec and full-profile AR-15 fire control groups chambered in .223, 5.56, and .300 Blackout, and it also plays nice with a lot of single-stage drop-in and cassette-style triggers. Installation is genuinely a drop-in job for most builds, though some minor fitment can pop up depending on your lower and trigger combo.
One thing worth knowing before you run it: buffer weight matters. Atrius recommends an H2 or H3 buffer for reliable cycling in Full-Semi mode, and a heavier buffer clears up most short-stroking if you run into it. Pair it with a low-shelf lower, do a proper function test after reassembly, and you'll be set. It's a robust, well-built piece that earns its spot in a serious AR-15 build.
No, and that's the whole point of the design. The ADG-FRS-AMBI replaces your safety selector, not your trigger, so you keep your existing mil-spec fire control group. This approach puts less stress on your rifle's internals than a traditional forced reset trigger.
Atrius recommends an H2 or H3 buffer for reliable cycling in Full-Semi mode. Standard carbine buffers can cause short-stroking or cycling hiccups. If you run into reliability issues, stepping up to a heavier buffer usually sorts it out.
It works with mil-spec and full-profile AR-15 fire control groups chambered in .223, 5.56, and .300 Blackout, plus a wide range of single-stage drop-in and cassette-style triggers. It does not work with stock Geissele, LaRue, or CMC triggers unless they have a super safety relief cut. If you want forced reset behavior on a Geissele SSA, SSA-E, or G2S, Atrius makes a separate G-Lever version for that.
For most builds it's a genuine drop-in swap that takes just a few minutes with basic tools. Some minor fitment can come up depending on your specific lower and trigger combination. Always run a proper function test after reassembly before taking it to the range.
| UPC | 850079014015 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ADG-FRS-AMBI |
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