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If you've been fighting a gritty factory trigger, the Geissele G2S is the fix a lot of folks land on first. It traces its DNA straight back to Geissele's Super Semi-Automatic (SSA) trigger, the same lineage that made a name for itself with the U.S. Special Operations community. The G2S was built to give you that battle-proven two-stage feel without the premium tag, and it uses the exact same tool steel as the SSA with sears cut on a wire EDM machine for smooth, consistent engagement round after round.
The pull breaks in the neighborhood of 4.5 pounds total, with a defined take-up on the first stage and a crisp, clean wall on the second. That predictability is what makes a two-stage shine. You feel the slack, settle into the wall, and add pressure until it breaks right where you expect it. No mystery, no creep. It's non-adjustable by design, which keeps things simple and reliable, and the M4 curved bow feels natural whether you're running a duty carbine, a hunting rig, or a range gun.
From outside the rifle, you'd be hard-pressed to tell a G2S from its pricier sibling. The feel and reliability carry over. The differences are behind the scenes: the G2S uses a different method for holding the hammer pin in place, skips the laser markings, and the parts are spot-checked for magnetic particle inspection rather than getting the full treatment. Real-world performance stays right there with the SSA.
Installation is straightforward for anyone comfortable working on an AR. It runs standard mil-spec pins and fits AR-15/M4 pattern lowers, with AR-10 compatibility as well. Owners consistently point to the easy install, the crisp break, and the solid reset as the reasons this trigger earns its keep. If you want a genuine upgrade from a mil-spec trigger that punches well above its class, the G2S is tough to beat.
The G2S shares the same tool steel construction and wire EDM cut sears as the SSA, so the feel and reliability are right in line with each other. The main differences are behind the scenes: the G2S uses a different hammer pin retention method, skips the laser markings, and its parts are spot-checked for magnetic particle inspection rather than fully inspected. For most users the on-the-rifle performance is nearly identical, which is why the G2S is such a popular value pick.
The G2S runs a total pull weight of roughly 4.5 pounds, landing in the 4.25 to 4.75 pound range. It's split across two stages with defined take-up followed by a clean, crisp wall on the second stage. The weights are non-adjustable, which keeps the trigger simple and consistent.
The G2S is built for mil-spec AR-15/M4 pattern lowers and uses standard mil-spec pins, and it's also listed as compatible with AR-10 platforms. It is not designed for the Sig MPX/MCX or pistol caliber carbine variants. If you're running a standard AR lower, this trigger drops right in.
Not at all for anyone who's comfortable working inside an AR lower. It's a component-style two-stage trigger that installs with the included pins, and owners regularly call out how easy the install is. If you've swapped a trigger before, you'll have this one in and running in a few minutes.
| UPC | 854014005045 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 05-145 |
| Color | AR14/AR10 |
| Length | 5.4500 |
| Model | |
| Product Type | Trigger |
| Style | Drop-In |
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