The Dead Air KeyMo Flash Hider M14-1 LH (Dead Air part no. DA303) is a .30 caliber muzzle device cut to the metric M14-1 left-hand thread. It is machined from 4140 heat-treated alloy steel with a black nitride finish. Its mass-shifted, equal-length tines cool burning gas without the ringing ping of a traditional three-prong design. This is the pitch for rifles with an M14-1 left-hand muzzle, so check the thread before ordering.

Key Specifications

• The muzzle thread is M14-1 left-hand, the pitch that decides which barrels this version fits.
• The through bore is .30 caliber, as Dead Air lists for this thread pitch.
• Material is 4140 heat-treated alloy steel, built to take heat and repeated suppressor mounting.
• The finish is black nitride, a hard surface treatment that resists corrosion.
• Overall length is 2.70 inches, as Dead Air lists for the KeyMo Flash Hider.
• Dead Air lists the family between 4.00 and 4.08 ounces depending on thread pitch.
• The design uses mass-shifted, equal-length tines that disrupt and cool burning gas before it ignites outside the muzzle.
• Unlike a traditional three-prong hider, it avoids the audible ping while keeping flash reduction.
• It is part of the KeyMo mounting system, so it works with the rifle bare or with a KeyMo suppressor on it.

Frequently Asked Questions

What thread is this flash hider? It is cut to M14-1 left-hand, a metric pitch, with a .30 caliber bore.

Does it ping like a three-prong? No. Dead Air says the equal-length tines eliminate the ringing effect.

Is it compatible with KeyMo suppressors? Yes. It belongs to the KeyMo mounting system, so it works bare now and with a KeyMo suppressor later.

Buy the Dead Air KeyMo Flash Hider M14-1 LH, .30 Caliber

A metric left-hand thread leaves few options, and this KeyMo flash hider is cut for M14-1 LH. It keeps visible flash down without the ping and leaves the door open to a KeyMo suppressor. See more in our silencer parts and accessories, and order from our Lubbock, Texas gun shop for fast shipping.