Description
The Gemtech 5.56 ETM Flash Hider is a purpose-built muzzle device made to pair with Gemtech's Elite Taper Mount suppressors, and it earns its keep whether you're running suppressed or bare. At around 2.37 inches long and just 2 ounces, it stays compact and keeps the balance of your rifle where you want it. Threaded in the standard 1/2×28 pattern, it fits the vast majority of 5.56 NATO and .223 Remington barrels out there, so it drops right into most builds without any fuss.
What the ETM Mount Brings to the Table
The whole point of the Elite Taper Mount system is repeatable alignment. When you thread a Gemtech ETM can onto this hider, the taper indexes the suppressor the same way every time, which keeps your point of impact consistent shot after shot. That taper interface is also the reason it resists carbon lock so well. Anyone who has ever fought a suppressor that welded itself to the muzzle knows how big a deal that is, and this design is built specifically to keep that from happening.
Running the 5.56 ETM Flash Hider Bare
You don't have to own the suppressor to get use out of this. Without a can attached, it works as a legitimate flash hider, cutting down the visible signature at the muzzle in low light. That makes it a smart move for folks who plan to add a Gemtech ETM suppressor down the road but want the muzzle device on the gun now.
Pin-and-Weld Ready for Short Barrels
One of the handier features here is that it comes pre-dimpled for pin and weld to a 14.5 inch barrel. Builders working on shorter hosts can use it to bring the setup up to a permanent 16 inch overall length. Finished in a low-glare black coating for corrosion resistance and durability, it's the kind of part you install once and stop thinking about.
Key Specifications
- Manufacturer: Gemtech
- Model: 5.56 ETM
- Manufacturer Part Number: 13815
- UPC: 022188894721
- Caliber: 5.56x45mm NATO / .223 Remington
- Thread Pitch: 1/2×28
- Mount System: ETM (Elite Taper Mount)
- Length: 2.37 in
- Weight: 2 oz
- Color / Finish: Black
- Barrel Prep: Pre-dimpled for pin and weld to 14.5 in barrel
- Suppressor Compatibility: Gemtech ETM-equipped suppressors
What’s Included
- Gemtech 5.56 ETM Flash Hider (1/2×28)
Frequently Asked Questions
What suppressors work with the Gemtech ETM flash hider?
This flash hider is built to mate with Gemtech's ETM (Elite Taper Mount) equipped suppressors. The taper interface indexes the can for repeatable alignment every time you attach it. If your suppressor uses the ETM mount, you're good to go.
Can I use the 5.56 ETM flash hider without a suppressor?
Yes. Run bare, it functions as a standard flash hider and cuts down the visible muzzle flash in low light. Plenty of folks put it on now and add the matching ETM suppressor later.
Is this Gemtech ETM flash hider set up for pin and weld?
It is. The device comes pre-dimpled for pin and weld to a 14.5 inch barrel, making it a straightforward choice for builders who need to bring a shorter host up to a permanent 16 inch overall length. The dimple gives your gunsmith a ready reference point for the pin.
Does the ETM design really help with carbon lock?
That's one of its main selling points. The Elite Taper Mount is engineered to virtually eliminate carbon locking when a suppressor is attached, so you're not fighting to break a can loose after a long range session. It's a big quality-of-life improvement for anyone who runs suppressed regularly.





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