Grab any Handguard or Builder Set at 15% Off | Shop Now

Dead Air Armament Key Mount AR-15 Muzzle Brake – .223/5.56 NATO – 1/2×28

SKU: DA101

Out of Stock
Orders will Ship within 1 Business Day
Backed by the Dead Air Warranty!
TOP ADD-ON'S
Armorer's Wrench for AR-15 & Multi-Function Tool by AT3™

Armorer’s Wrench for AR-15 & Multi-Fuction Tool by AT3™

$19.99
Birchwood Casey Shoot-N-C Target - Round Bullseye - 12" - 5 Targets

Birchwood Casey Shoot-N-C Target - Round Bullseye - 12" - 5 Targets

$9.99

Your Device For Great Recoil Management & Muzzle Rise Control

The Dead Air Armament Key Mount Muzzle Brake is designed to fit the Sandman’s series of suppressors. It features compensating ports drilled into the top of the brake that offers great recoil management and effectively reduces muzzle rise.

The Key Mount Muzzle Brake reduces the length of recoil so that repeating shot energy cannot overlap and knock the shooter off target. Full auto fire is also possible with massively reduced recoil and muzzle climb, meaning that all shots fall on target.

Note: This muzzle device has the common 1/2-28 threads found on .22 caliber (.223/5.56) firearms. The bore however is overbored to .30 Caliber. It will work with both .22 caliber bullets as well as .30 caliber firearms that use 1/2-28 threads.

Your Gateway To Silence

The Keymount Muzzle Brake is your gateway to silence and you can quickly attach your Sandman-L or Sandman-S to your rifle for an uncompromised and quiet operation.  If you’re not quite ready to turn up the silence, you can still employ the finest brake on the market and experience a flatter shooting rifle with minimal concussion compared to any traditional muzzle brakes.

Compatibility:

  • Dead Air Sandman-L, Sandman-S, Sandman-K
  • Suppressors fitted with the Key-Mo adapter

Inclusion:

  • One muzzle device
  • One shim set

Specifications:

  • Threads: 1/2×28
  • Caliber: 30 Cal
  • Weight: 3.7 oz. – 4.2 oz.
  • Length: 2.6″

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Dead Air Armament Warranty

We provide a lifetime warranty against all manufacturing defects and damages caused by the normal use of this product. The manufacturer will repair or replace free of charge any suppressor manufactured by, or at the direction of, Sound Moderation Technologies. The product is sold “as is” with no further implied contractual rights or warranties beyond those expressly stated herein.

The warranty does not apply to certain conditions or acts. It is at the sole discretion and determination of Sound Moderation Technologies if a particular defect or condition is covered by this warranty.

Conditions not covered include, but are not limited to: modifications, abuse, neglect, use of defective ammunition, use of improperly sized ammunition, and criminal conduct.

Sound Moderation Technologies assumes no liability for damages or bodily injury caused by such acts or omissions as previously described. Abuse and neglect are defined as usage outside of the reasonable scope for which the product is intended, thus contributing to the accelerated and unreasonable premature wear of the suppressor itself.

To submit a warranty claim please submit the online form here and have the below ready

• Your Product In-hand
• A photo of your ID
• A copy of your Form 3 or Form 4

Notice:

DO NOT SHIP THE SUPPRESSOR FOR REPAIR WITHOUT FIRST COMPLETING THE FORM AND RECEIVING A CONFIRMED RMA NUMBER. DO NOT SHIP IN ANY EVENT WITHOUT A COPY OF THE APPROVED BATF FORM.

When you ship the suppressor back to the manufacturer, please include a printed copy of the completed RMA form.

If for any reason your suppressor is not eligible for repair or replacement, you may purchase a replacement suppressor for 50% off the MSRP for the same or similar suppressor. Please contact our Customer Service Department for further details and requirements.

Contact Details:

Telephone: (844) 293-6778.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 9 reviews
67%
(6)
0%
(0)
22%
(2)
0%
(0)
11%
(1)
J
Jason Jones
Labeled 7.62

The muzzle brake I just bought was.223&556, but I received one labeled “7.62”. Wondering if I can still use this on a 556 build?

C
Cory Overy
Impressed

I'm not really what you call an expert, just a guy that shoots now and then. I am impressed by the reduction of felt recoil on my AR15. The barrel movement is definately less after a shot. This worked out great for me and the gun I have.

J
Jason
Dead air armament

Looks good and works good, but there is some concussion towards shooter, but it does reduce recoil very well. The timing kit didn't work on my rifle, but used a crush washer instead to time it, worked perfectly

M
Michael Senese

Dead Air Armament Key Mount AR 15 Muzzle Brake - .223/5.56 NATO - 1/2×28

Thank you for leaving a review for the Dead Air Armament Key Mount AR 15 Muzzle Brake. We are glad to hear that you are satisfied with your purchase and that it is compatible with .223/5.56 NATO caliber and 1/2×28 threads. We appreciate your feedback and hope you continue to enjoy your product.

S
Samuel Caldwell

Way too loud for me. Didn’t minimize recoil at all.

We're sorry to hear that the Dead Air Armament Key Mount AR 15 Muzzle Brake did not meet your expectations. We understand that noise level and recoil reduction are important factors when choosing a muzzle brake. We would be happy to discuss alternative options with you that may better suit your needs. Please don't hesitate to reach out to our customer service team for assistance.

Customers who viewed this item also viewed these products

Dead Air Armament Key Mount Muzzle Brake

Dead Air Armament Key Mount Muzzle Brake - .308 Win/7.62mm...

$79.95
Your Device For Great Recoil Management & Muzzle Rise Control The Dead Air Armament
Dead Air Armament Keymount Muzzle Brake - .223/5.56 NATO - 1/2×28

Dead Air Armament Keymount AR-15 Micro Brake - .223/5.56 NATO...

(no reviews yet)
$79.95
Your Gateway To Silence For Pistol Caliber Carbines Or Sub Guns The Dead Air
VG6 Gamma 556SL Muzzle Brake – .223/5.56 NATO 1/2×28

VG6 Gamma 556SL AR-15 Muzzle Brake – .223/5.56 NATO 1/2×28

The Perfect Muzzle Device For Your Pinned & Welded Builds The Gamma 556SL is
ATI AR-15 Shark Muzzle Brake w/Crush Washer - .223/5.56 NATO 1/2×28

ATI AR-15 Shark Muzzle Brake w/Crush Washer - .223/5.56 NATO...

$33.99
Stunning 556 Muzzle Brake With Distinct Looks & Reliable Power The ATI AR15 Shark
AT3 Tactical 3-Port Muzzle Brake

AT3™ AR-15 3-Port Muzzle Brake with Crush Washer - 1/2x28...

$29.99
Extreme Recoil Reduction at an Affordable Price Taming the recoil of 5.56 tends to
Dead Air Armament Keymount Flash Hider - .223/5.56 NATO - 1/2×28

Dead Air Armament Keymount AR-15 Flash Hider - .223/5.56 NATO...

$79.95
Long-Awaited Flash Hider Mount For Sandman’s Series Of Suppressors The Dead Air Armament Keymount
Dead Air Armament Keymount Micro Brake - .308 Win/7.62mm – 5/8×24

Dead Air Armament Keymount Micro Brake - .308 Win/7.62mm –...

(no reviews yet)
$79.95
Your Gateway To Silence For Pistol Caliber Carbines Or Sub Guns The Dead Air
Lantac Dragon Dead Air KEYMO Muzzle Brake - .223/5.56 NATO – 1/2×28

Lantac Dragon Dead Air KEYMO AR-15 Muzzle Brake - .223/5.56...

(no reviews yet)
$128.99
The Muzzle Device For Your Favorite Dead Air Sandman KEYMO Silencers The Lantac Dragon
Lantac Dragon Muzzle Brake - .223/5.56 NATO - 1/2×28

Lantac Dragon Muzzle Brake - .223/5.56 NATO - 1/2×28

(no reviews yet)
$128.99
Enhanced Muzzle Brake For A Better & Improved Recoil Management The Lantac Dragon Muzzle
Gemtech Quickmount Muzzle Brake - .223/5.56 NATO 1/2×28

Gemtech Quickmount AR-15 Muzzle Brake - .223/5.56 NATO 1/2×28

$94.05
Less Felt recoil, Less Muzzle Climb, & Faster Follow-Up Shots The new Gemtech Muzzle
Dead Air Xeno Muzzle Brake

Dead Air Xeno Muzzle Brake 1/2x28 or 5/8x24

(no reviews yet)
$80.00
Dead Air Xeno Muzzle Brake for Precision Shooters Experience exceptional recoil control with the
KeyMicro Adapter

Dead Air Key-Micro Mount Legacy Adapter

(no reviews yet)
$199.00
Mount Non-Dead Air Suppressors using Dead Air’s Proven KeyMicro System Dead Air’s KeyMicro Legacy

CMMG AR-15 Zeroed Muzzle Brake w/ Crush Washer - .223/5.56...

(no reviews yet)
$97.95
Maximize Shooting Experience with a CMMG Muzzle Brake The CMMG AR-15 Zeroed Muzzle Brake
Lantac Dragon SilencerCo ASR Muzzle Brake - .223/5.56 NATO – 1/2×28

Lantac Dragon SilencerCo ASR AR-15 Muzzle Brake - .223/5.56 NATO...

(no reviews yet)
$128.99
 Reduced Recoil & Muzzle Climb For More Accurate Shots The Lantac Dragon SilencerCo ASR
VG6 Epsilon 556 SL Muzzle Brake – .223/5.56 NATO 1/2×28

VG6 Epsilon 556 SL AR-15 Muzzle Brake – .223/5.56 NATO...

The Ideal Muzzle Brake For 14.5″ Rifle Builds The VG6 Epsilon 556 SL Muzzle

Frequently purchased together

Timber Creek Enforcer M-LOK Mini Angled Foregrip Black

Timber Creek Enforcer M-LOK Mini Angled Foregrip

Timber Creek Enforcer M-LOK Mini Angled Foregrip Control recoil while looking stylish with Timber
Armaspec SMB™ Buffer Kit - AR15 GEN3 - Buffer Tube

Armaspec SMB™ Buffer Kit - AR-15 GEN3 - Buffer Tube,...

(no reviews yet)
Mitigate Recoil and Elimate Buffer Sound on Your Next AR Build The Armaspec SMB™

Armaspec Victory Ambidextrous AR-15 Charging Handle

Integrated Gas Vents and Center-Force Ambidextrous Charging This charging handle is a new contender,
Dead Air Armament Keymount Muzzle Brake - .223/5.56 NATO - 1/2×28

Dead Air Armament Keymount AR-15 Micro Brake - .223/5.56 NATO...

(no reviews yet)
$79.95
Your Gateway To Silence For Pistol Caliber Carbines Or Sub Guns The Dead Air
LBE Unlimited AR-15 Barrel Nut

LBE Unlimited AR-15 Barrel Nut

$11.99
LBE Unlimited Standard AR15 Barrel Nut Compatible with any standard AR-15 upper, the LBE
AT3 Tactical Crush Washer - 5/8 Inch for .308/7.62

AT3™ 5/8 Inch Crush Washer for .308/7.62 Muzzle Devices

$1.99
Ensure Proper Timing on Your .30 Caliber Muzzle Device Crush washers are essential to

Timber Creek Outdoors Small Parts Pack - Ambi Safety, Extended...

$69.99
Make Your Lower Unique and Easier to Use Complete your lower with style and

Arms Unlimited Ambidextrous AR-15 Magazine Release

$25.00
Colt OEM Ambidextrous AR-15 Magazine Release The Arms Unlimited Ambidextrous AR-15 magazine release drops

Timber Creek Outdoors Extended Magazine Release - AR-EMR

$15.99
Great Performance on Your AR with Timber Creek Outdoors Extended Magazine Release Timber Creek’s

Timber Creek Outdoors Ambidextrous 45/90 AR-15 Safety Selector

$31.99
90 or 45 Degree Ambi Safety – Form and Function for Everyone The Timber
AT3 Tactical 3-Port Muzzle Brake

AT3™ AR-15 3-Port Muzzle Brake with Crush Washer - 1/2x28...

$29.99
Extreme Recoil Reduction at an Affordable Price Taming the recoil of 5.56 tends to
AT3 Tactical Crush Washer - 1/2 Inch for 5.56/.223

AT3™ 1/2 Inch Crush Washer for .223/5.56 Muzzle Devices Compatible...

$1.99
Time Your Muzzle Device with a Black Nitride Crush Washer from AT3 Crush washers

AT3™ FU-BAG™ AR-15 Lost Parts Kit - Springs, Detents, Replacement...

$7.99
Made an “Oops” with your New Build?  You Detent-Launchin’, Spring-Losin’ Fool, you. We’ve all

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...