The Ultradyne Mercury Muzzle Brake for AR-15 223 Remington/5.56 NATO 1/2x28, Black is a muzzle device that fits AR-15s with 1/2X28 Threads.
MERCURY has been meticulously engineered for the .223/5.56 caliber to provide superior recoil reduction and neutralize muzzle rise with a smooth, balanced release of blast energy. Progressive 90 side ports vent combusting gases at intervals that spread out the recoil impulse for efficient, accurate follow-up shots. Like all Ultradyne muzzle devices, a timing nut is included for easy installation.
A muzzle device reduces flash or recoil and muzzle rise, depending on its design. Check the thread pitch matches your barrel exactly, and time the device with a crush washer or shims as the manufacturer instructs.
How It Compares
Also compare the Apollo Brake for AR-15s with 1/2x28 Threads, Athena Linear Compensator for AR-15s with 1/2x28 Threads and Pegasus Brake for AR-10s with 5/8x24 Threads. Browse all AR-15 Parts and the full Ultradyne range. New to this? Read our guide: AR-15 Upgrades: Charging Handles, Safeties, Buffers and Muzzle Devices.
Ideal For
- AR-15 rifles in 223 Remington/5.56 NATO with 1/2x28 threads
- Shooters who want recoil reduction and a flat muzzle
- Faster, more accurate follow-up shots
Key Features
- 1/2X28 thread pitch
- 416 stainless steel
- Nitride finish
- Includes timing nut
- 223 Remington/5.56 NATO
- 3.1 oz
- 416 Stainless Steel
- Includes Shrouded Timing Nut
Compatibility & Fitment
Fits AR-15s with 1/2X28 Threads. Not sure it fits? Contact us before you order and we will check for you.
Technical Specifications
Brand | Ultradyne |
Type | Muzzle Device |
Model | MERCURY |
Caliber | 223 Remington |
Accessories | Shrouded Timing Nut |
Platform | AR-15 |
Color | Black |
MPN | UD10670 |
UPC | 851019008279 |
US Shipping & Support
Genuine Ultradyne, brand new and covered by the manufacturer's warranty. Shipping is free on US orders of $99 or more, and smaller orders ship from $6.95. Questions about fit, mounting or which option suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does the Mercury Brake fit?
Fits AR-15s with 1/2X28 Threads.
Is this a genuine Ultradyne product?
Yes. It is a new, genuine Ultradyne product sourced through an authorized US distributor.
How much is shipping?
Shipping is free on US orders of $99 or more. Orders under $99 ship at a flat rate from $6.95 to $9.95, depending on the order total.
