Dead Air DA119 KeyMo 9mm Flash Hider

All Dead Air Armament muzzle devices
Dead Air Armament Dead Air DA119 KeyMo 9mm Flash Hider - Muzzle Device for AR-15 - view 1
Dead Air Armament Dead Air DA119 KeyMo 9mm Flash Hider - Muzzle Device for AR-15 - view 2
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Dead Air Armament

Overview

The Dead Air DA119 KeyMo 9mm Flash Hider is designed to effectively reduce the visible flash when firing, making it an essential component for stealth and accuracy. With a thread pitch of 1/2x28, it easily attaches to a variety of compatible barrels, enhancing versatility for multi-caliber builds. This flash hider is commonly found in builds focused on tactical applications or those aiming for reduced signature during shooting.

Specifications

MPNDA119
FinishBlack
Muzzle Device TypeFlash Hider
Thread Pitch1/2x28
MaterialSteel
CaliberMulti
ColorBlack

Available Merchants(6)

Prices checked

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Brownells logo
Brownells
Free shipping over $99
Shipping Speed
In Stock
$74.99
Optics Planet logo
Optics Planet
Free shipping
Shipping Speed
In Stock
$88.49
BattleHawk Armory logo
BattleHawk Armory
Shipping varies
Shipping Speed
In Stock
$89.00
Classic Firearms logo
Classic Firearms
Shipping varies
Shipping Speed
Out of Stock
$72.29
KY Gun Company logo
KY Gun Company
Flat rate shipping
Shipping Speed
Out of Stock
$81.99
Palmetto State Armory logo
Palmetto State Armory
$9.99 shipping (free over $99)
Shipping Speed
Out of Stock
$89.99

Build history on GunPartPicker

Builders have added the Dead Air DA119 KeyMo 9mm Flash Hider to their builds on GunPartPicker. Since April 2026, it ranks #82 of the 560 muzzle devices builders have added.

Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 3 of the 6 retailers we track have it in stock. It dipped to $69 at KY Gun Company for a stretch in October 2026, under its usual $72.29, so sales do come around. Buying today, the lowest price is $74.99 at Brownells, above October's low of $69, so a better deal may come back.

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Frequently Built With

The part most often added in each category by the builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

92%
AR-1592%
AR-105.2%
AR-92.8%

Caliber

67%
5.56 NATO67%
.223 Wylde15%
300 Blackout7.2%
.308 Win3.7%
9mm2.1%
Other5.3%

Gas System

46.8%
Mid-Length46.8%
Carbine28.9%
Rifle12.2%
Pistol10%
Blowback1.3%
Other0.9%

Builds Featuring This Part

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Builds in the community that include the Dead Air DA119 KeyMo 9mm Flash Hider

BuildPartsTotal
Mk18 + 1 build
Mk18 + 1
27$4932.14
Aero Precision 11.5" build
Aero Precision 11.5"
21$2227.87

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