The Dead Air KeyMo Flash Hider 5/8-24 is a .30 caliber muzzle device from Dead Air Silencers (brand part no. DA302), threaded 5/8-24. Dead Air builds it with a .30 caliber bore for rifles that carry a 5/8-24 muzzle thread. It is machined from 4140 heat-treated alloy steel with a Black Nitride finish, and its mass-shifted, equal-length tines cool burning gas without the ringing ping of a traditional three-prong design. Run it bare on a .30-caliber rifle for flash control, or keep it as the base for a KeyMo suppressor mount.

Key Specifications

• The muzzle thread is 5/8-24, the pitch that decides which barrels this version fits.
• The through bore is sized for .30 caliber barrels, which matches the thread pitch it is paired with.
• Material is 4140 heat-treated alloy steel, chosen to hold up to heat and repeated suppressor mounting.
• The finish is Black Nitride, a hard surface treatment that resists corrosion and wear.
• Overall length is 2.70 inches, long enough to carry the tine design without adding much to the muzzle.
• Weight runs 4.00 to 4.08 ounces depending on thread pitch, a modest load on the end of a barrel.
• The tines are mass-shifted and equal in length, an arrangement meant to disrupt and cool burning gas before it ignites outside the muzzle.
• The design eliminates the audible ping that traditional three-prong flash hiders make, so there is no ringing when it fires.
• It belongs to the KeyMo mounting system, so it works on a bare rifle or as the interface for a KeyMo-equipped suppressor.

Frequently Asked Questions

What thread does this flash hider use? It is threaded 5/8-24 with a .30 caliber bore. Dead Air sells the KeyMo Flash Hider in several thread pitches, so match this one to your muzzle thread before ordering.

Can I run it without a suppressor? Yes. Dead Air designed it to give strong flash suppression whether the rifle is run suppressed or unsuppressed, and it is part of the KeyMo mounting system if you add a KeyMo-equipped suppressor later.

Will it ping like other flash hiders? No. Dead Air built it with mass-shifted, equal-length tines specifically to remove the ringing ping that traditional three-prong designs produce.

Buy the Dead Air KeyMo Flash Hider 5/8-24, .30 Cal

This version suits shooters who want a flash hider that already speaks the KeyMo language for later suppressor work. Order it from our Lubbock, Texas gun shop for fast direct shipping, and browse more Class 3 parts and accessories while you are here.