What calibre and thread pitch is the GrovTec G-Brake model GTHM362 designed for?

The GrovTec G-Brake model GTHM362 is specifically engineered and bored for .223 Remington and 5.56x45mm NATO calibres. It features a 1/2"-28 UNEF thread pitch, making it strictly limited to barrels with this factory threading unless a suitable thread adaptor is used.

Can I use this .223 muzzle brake on my .308 Win rifle if I use a thread adaptor?

No, you must not use the GTHM362 on larger calibres such as .308 Win, 6.5mm, or .30 cal. It is strictly limited to .223/5.56 projectiles, and attempting to fire larger rounds through a .223 bore brake will cause a catastrophic baffle strike. For .30-calibre applications, you should look at the companion GrovTec GTHM363 model.

What is included with the GrovTec G-Brake for installation on my rifle?

The GrovTec G-Brake comes complete with a crush washer to assist with proper timing and installation on your barrel. It is constructed from solid steel with a durable Black Nitride and Black Oxide finish designed to handle standard sustained firing temperatures in harsh Australian outback conditions.

5.56 Muzzle Brake - GrovTec GTHM362

The GrovTec G-Brake Muzzle Brake .223/5.56 is an all-steel recoil mitigation device engineered for rifles chambered in .223 Remington and 5.56x45mm NATO. Machined as a single-piece unit with a corrosion-resistant black nitride finish, it features side-port redirection to vent expanding propellant gasses laterally. This redirection significantly reduces felt recoil and counteracts muzzle rise, keeping the shooter's reticle aligned with the target for faster follow-up shots.

Key Features

Lateral Gas Redirection: Side-facing ports vent high-pressure propellant gasses to minimise rearward recoil impulse and muzzle climb.
All-Steel Construction: Machined from solid steel with a durable black nitride/oxide finish for wear and environmental resistance.
Included Crush Washer: Supplied with a crush washer to facilitate correct timing and secure barrel installation.
Target Retention: Keeps the sight picture stable through the shot string, allowing rapid target transitions across sport and field applications.

Technical Specifications

Calibre Compatibility: .223 Remington / 5.56x45mm NATO
Thread Pattern: 1/2"-28 UNEF
Material: Solid steel
Finish: Black Nitride / Black Oxide
Design: One-piece, multi-port recoil brake
Included Hardware: Timing crush washer

Who is the GrovTec G-Brake Muzzle Brake .223/5.56 for?

Practical Rifle Competitors — requires minimal muzzle climb on 1/2"-28 UNEF threaded barrels to execute rapid split times and maintain sight alignment across dynamic shooting stages.
Benchrest Varmint Shooters — relies on the muzzle brake's dedicated .223 Remington / 5.56x45mm NATO porting to spot bullet impact through high-magnification optics without losing sight of the target.
Tactical Rifle Trainers — utilizes the robust single-piece steel construction on 5.56 NATO platforms to withstand high-volume strings of fire during flat-range drills.

Less suitable for: Shooters firing larger calibres exceeding the .223 Remington / 5.56mm bore threshold (such as 6.5mm, .308 Winchester, or .30-calibre cartridges), which require a dedicated .30-calibre brake with 5/8"-24 threading, or those operating in dry prone environments who need a linear compensator or flash hider to reduce lateral ground-dust disturbance.

SKU	GT40844LP
Model #	GTHM362
Brand	Grovetec
Shipping Weight	1.0000kg

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Grovtec Gthm362 G-Brake Muzzle Brake 223 5.56 1 2-28 Steel

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