What thread pitch and calibre compatibility does the GrovTec GTHM356 flash hider require?

The GrovTec GTHM356 G-Nite is engineered specifically for barrels featuring a 5/8"-24 right-hand thread pitch. It is compatible with .30 calibre projectiles, including .308 Winchester, 7.62mm NATO, and .300 AAC Blackout, and cannot be used on larger bores or alternative thread pitches without an adaptor.

How does the open pronged design perform during night hunting and low-light shooting?

The device features an open, multi-prong geometry that rapidly disrupts and cools expanding propellant gases as they exit the barrel. This significantly reduces visible muzzle flash to preserve your unassisted night vision and prevent the blinding saturation or blooming of night vision devices during low-light field conditions.

Are there any Australian electrical compliance requirements or special permits needed for this flash hider?

As a purely mechanical firearm accessory, 240V mains compatibility, SAA approvals, and RCM marks do not apply. Furthermore, passive flash hiders do not require prohibited weapon permits in most Australian jurisdictions, though local state-by-state firearms appearance laws and registry regulations should always be observed.

What installation accessories are included with the GrovTec G-Nite flash hider?

The GrovTec GTHM356 comes packaged with a durable steel crush washer to assist with proper timing and secure installation on your rifle barrel. Constructed from one-piece CNC-machined steel with a black nitride finish, it provides robust resistance against high-temperature combustion residue and outback environmental wear.

G-Nite Flash Hider - GrovTec GTHM356

The GrovTec G-Nite Pronged Flash Hider .308/7.62 – 5/8-24 (MPN: GTHM356) is a passive, one-piece CNC-machined steel muzzle device designed to mitigate visible muzzle flash. Engineered with an open multi-prong geometry, it disrupts and cools expanding propellant combustion gases at the muzzle. Finished with a corrosion-resistant black nitride (Melonite) surface treatment, the G-Nite is engineered to thread directly onto standard .30 calibre barrels featuring a 5/8"-24 TPI pitch, and it includes a steel crush washer to facilitate correct timing during installation.

Key Features

Multi-Prong Gas Disruption: Uses open prong geometry to break up expanding combustion gases, decreasing visible muzzle signature during dusk, low-light, and nocturnal shooting sessions.
CNC-Machined Steel Construction: Machined from solid steel for continuous structural reliability under standard bolt-action and semi-automatic firing schedules.
Black Nitride Finish: Melonite coating provides surface hardening and protection against high-temperature powder residue, environmental moisture, and field wear.
Installation Hardware Included: Supplied with a dedicated steel crush washer for mechanical timing and secure alignment on the barrel shoulder.

Specifications

Manufacturer Part Number (MPN): GTHM356
Calibre Compatibility: .30 Calibre (.308 Winchester, 7.62mm NATO, .300 AAC Blackout)
Thread Pitch: 5/8"-24 TPI
Material: CNC-machined steel
Finish: Black Nitride / Melonite
Packaged Dimensions: 5.5 × 3 × 1.75 in (approx. 140 × 76 × 44 mm)
Packaged Weight: 4.96 oz (approx. 140.6 g)
Included Accessories: Steel crush washer

Who is the GrovTec G-Nite Pronged Flash Hider .308/7.62 - 5/8-24 for?

Night hunters using .308 or 7.62mm rifles — provides flash disruption on .30 calibre barrels threaded in 5/8"-24 TPI, preventing muzzle bloom and preserving the shooter's field of view through night vision optics.
Low-light tactical and pest control shooters — utilizes an open-prong flash hider design on standard 5/8"-24 TPI muzzles to eliminate disruptive flash signatures without requiring active electrical components or battery power.

Less suitable for: Firearms with bore diameters exceeding .30 calibre (such as .338 Lapua or 9mm) or barrels with alternative muzzle threads such as 1/2"-28 or M18x1; shooters requiring maximum recoil reduction rather than flash suppression should consider a dedicated multi-port muzzle brake.

SKU	GT40842LP
Model #	GTHM356
Brand	Grovetec
Shipping Weight	1.0000kg

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Grovtec Gthm356 G-Nite Flash Hider 308 Caliber 5 8x24 Thread

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