Gemtech 5.56 ETM Flash Hider – 1/2x28 Thread
Not Yet Rated | Write the First Review SKU: 222-GEM-13815
UPC: 22188894721
MFG#: 13815

Gemtech 5.56 ETM Flash Hider – 1/2x28 Thread

Reduce flash, improve reliability, and keep your suppressor safe. The Gemtech 5.56 ETM Flash Hider is precision-machined to minimize muzzle flash, provide secure suppressor mounting, and virtually eliminate carbon lock issues. Designed for AR-15 platforms and other rifles threaded 1/2x28, this flash hider combines rugged durability with suppressor-ready performance.

Product Overview

The Gemtech ETM Flash Hider is more than just a simple muzzle device—it’s a precision component built to enhance your rifle’s performance. Engineered for 5.56 NATO and .223 Remington rifles, its design suppresses visible flash while maintaining proper suppressor alignment.

Pre-dimpled for pin & weld applications, the ETM Flash Hider is perfect for 14.5-inch AR-15 barrels that need to meet the 16-inch legal requirement. Its steel construction and black nitride finish ensure long service life under heavy use, making it a reliable choice for tactical, hunting, or range shooting.

Key Features

• Thread Pitch: 1/2x28 TPI (standard for 5.56/.223 rifles)

• Caliber Compatibility: 5.56 NATO / .223 Remington

• Suppressor Ready: Works with Gemtech ETM suppressor mounts

• Carbon Lock Prevention: Engineered to reduce suppressor carbon buildup and sticking

• Pre-Dimpled Design: Easy pin & weld option for 14.5-inch barrels

• Construction: Precision-machined steel

• Finish: Black nitride for strength and corrosion resistance

• Length & Weight: Approx. 2.37” long, ~2 oz lightweight design

Why Choose the Gemtech 5.56 ETM Flash Hider?

This flash hider offers more than simple flash suppression. By incorporating the Extreme Taper Mount (ETM) system, it ensures consistent suppressor fit and repeatable accuracy shot after shot. Shooters benefit from:

• Reduced muzzle flash for better low-light visibility

• Long-lasting black nitride finish that resists wear and corrosion

• Secure suppressor mounting without the risk of carbon locking

• Compliance-ready pin & weld design for 14.5-inch AR builds

• Lightweight profile that won’t upset rifle balance

Specifications

Installation Tips

• Confirm barrel threading is 1/2x28 TPI

• Use a crush washer or timing shims for proper installation

• Torque to manufacturer specifications

• For suppressor use, always confirm concentric alignment

FAQs

Q: What calibers does this flash hider work with?
It is designed for 5.56 NATO and .223 Remington rifles threaded in 1/2x28.

Q: Can I use this on my AR-15?
Yes. Most AR-15 barrels in 5.56/.223 use 1/2x28 threading, making this flash hider a direct fit.

Q: Is it compatible with Gemtech suppressors?
Yes. It is part of the ETM (Extreme Taper Mount) system, ensuring secure, repeatable suppressor alignment.

Q: What does “pre-dimpled” mean?
The device comes pre-machined with dimples for pin & weld installation, making it easy to permanently attach on 14.5” barrels to meet 16” overall length requirements.

Q: Does this prevent carbon lock?
Yes. Its design virtually eliminates carbon lock, ensuring your suppressor can be removed easily after use.

Q: How much does it weigh?
It weighs about 2 ounces, keeping your rifle balanced and lightweight.

Q: What finish is used?
It has a black nitride finish for corrosion resistance and long service life.

Upgrade Your Rifle with the ETM Flash Hider

The Gemtech 5.56 ETM Flash Hider – 1/2x28 is the ultimate solution for shooters who demand reliable flash suppression, suppressor-ready compatibility, and compliance for short-barrel builds. Built tough and engineered for performance, it’s a must-have upgrade for any serious 5.56 rifle owner.