Linear Compression Pad 
KeyMo Hybrid
$139.99
KeyMo Hybrid
KeyMo Flash Hider and FG42 also available.
We are officially licensed and approved by Dead Air Silencers to incorporate their KeyMo mount design with our muzzle device designs. The KeyMo Hybrid is compatible with Dead Air’s KeyMo-equipped silencers.
Features
- In-house heat treated to condition H900 for a through-hardness of 45-47 HRC
- 17-4 stainless steel that is heat treated to condition H900 exhibits 14% higher ultimate tensile strength over hardened 4140 steel
- Every 90º corner is machined with undercut profiles to improve seal and engagement with the suppressor
- 4 jet ports drilled at 51 degrees to direct gas forward and away from the shooter
- 2 jet ports at 12 o’clock, 1 at 4 o’clock and 1 at 8 o’clock
- Recessed jet ports with a flat face to reduce carbon buildup on the device and improve ease of separation with a suppressor
- Forward-directed gas reduces muzzle rise, softens recoil, and pushes all explosive gasses away from the shooter
- Closed-prong design reduces flash and eliminates tuning-fork “ping”
- Shim kit included
Specifications
Material:
17-4 stainless steel
Threads:
1/2-28 & 5/8-24
1/2-28 bore diameter:
8.50mm (.334”)
5/8-24 bore diameter:
9.0mm (.354"), Not for use with 9mm ammunition
Finish:
Black Nitride finish - offers added lubricity, additional surface hardness, and corrosion resistance, H900 (appears as a deep gold/bronze color)
Installation:
Andrew Schmidgall –
Is the hybrid keymo a muzzle break and flash hider?
Blackout Defense –
Correct. It is a closed-prong flash hider with angled gas ports that direct the gas away from the shooter and reduce muzzle rise.
Uriel Beneli –
On paper is this a muzzle breaks or flash hider. I have a rifle build that I would like to purchase but given that I live in NJ, it has to be a muzzle break in order for it to be legal. I know there was an option for the dead air keymod muzzle breaks as I had that with my configuration but now I no longer see that option available. Please let me know if this product is legal in nj or is officialy as flash hider on paper and will not suffice.
Blackout Defense –
Please consult your local dealer in New Jersey as well as this guidance by the New Jersey State Police: https://nj.gov/njsp/firearms/firearms-faqs.shtml. Our hybrid KeyMo is both a flash suppressor and a brake. You are welcome to purchase a dedicated brake elsewhere and send it to us for pinning and welding to your rifle.
Lewis –
How long is this one?
Blackout Defense –
Both our flash hider and KeyMo muzzle devices are 2.82″.
Rob –
what type of caliber can this shoot? please and thx you
Blackout Defense –
Our muzzle devices are rated for .223 and 5.56 ammunition.
Ron Gale –
When is forward assist going to be available to the public?
Blackout Defense –
The forward assist went live in November and is available on our custom rifle and upper builder.
Queue –
I see that you state in the replies below that it is only specced for .223 projectiles. Is a 5/8×24 larger-bore version forthcoming?
Blackout Defense –
Yes.
Sean –
Is the bronze available?
Blackout Defense –
Not currently. The winter oxygen levels and lack of humidity has affected our ability to achieve that finish in our non-vacuum ovens. We anticipate being able to restock in a few months when we move into spring.
James –
On which length of barrels this muzzle device will achieve 16″ overall?
Will this make a 13.9″ barrel a 16″ after pinned?
Blackout Defense –
Yes. Our muzzle device is 2.82″. Even with thread overlap, our 13.9″ barrels will reach/exceed 16.0″ with our KeyMo muzzle device.
Aiden Hall –
Will this pin and weld on my 13.7” barrel and make it a legal 16”?
Blackout Defense –
No. Our Keymo hybrid muzzle device is 2.82″ and you must consider thread overlap. We recommend a muzzle device of no less than 2.9″ for a 13.7″ barrel to ensure you meet the 16.0″ length requirement.
CarlGori –
Is the sure fire so I’m break armband-556-1/2-28 mussel break legal in New Jersey
Blackout Defense –
Please contact your local dealer regarding the necessary modifications for New Jersey compliance and review the following guidelines published by the New Jersey State Police: https://www.state.nj.us/lps/dcj/agguide/assltf.htm
Jefferylovingood –
Can I talk to someone on the phone on building my weapon
Blackout Defense –
Absolutely. Please give us a ring at 480-781-0572 and select option 1 for sales. If we are on the other line when you call, you can also email us at customerservice@blackoutdefense.com with your number and someone will call you.
William Daniels –
Would one of either of the uppers you guys make fit an IWI Zion lower?
Blackout Defense –
We cannot test the fitment of our uppers will all third-party receivers, however, our upper receiver is machined to fit any lower receiver that is machined to mil-spec dimensions. If the IWI Zion lower receiver is machined to mil-spec dimensions there should no issues with fitment.
Steve –
Would this need to be timed? I am planning to use this as a supressor mount. What would be the best position for both supresses and unsuppressed?
Blackout Defense –
Yes it needs to be timed, but the timing does not differ for suppressed vs unsuppressed.
Duer –
Could I use this for a 6mm ARC build? Would a few shims get me to 16″ if i have a 13.7″ barrel and this muzzle?
Blackout Defense –
The thread is 1/2-28 and the length is 2.82″. The muzzle device is not long enough to qualify a barrel shorter than 13.9″.
Duer –
Can I use this for 6 mm ARC or 6.5 Grendel?
Blackout Defense –
This muzzle device is 1/2-28 thread and will work with 6MM ARC as long as long as it is also threaded to 1/2-28. This muzzle device is NOT compatible with 6.5 Grendel and in any event it should not even thread onto that barrel because 6.5 Grendel should be threaded to 5/28-24.
Jacob –
Will the Keynote hybrid be made for 300 blackout?
Blackout Defense –
Yes, absolutely. Please sign up for our newsletter and follow our Instagram to stay up to date on new product releases and products in development. We intend to release our 5/8-24 muzzle devices this year.
Joshua –
How does this compare to the Dead air break?
Blackout Defense –
Dead Air makes an excellent brake. There are many independent reviews on YouTube that can help you compare.
Luis Navarro –
How much does this weigh?
Blackout Defense –
Our Keymo hybrid weighs 4.96 oz.
xsk0rch –
Will you be making these for M18-1.5 for 8.6 blk?
Blackout Defense –
We are working with Dead Air to determine if and when it would appropriate to start on a muzzle device compatible with 8.6 BLK.
Nate –
Is this for 5.56 or 30 cal?
Blackout Defense –
It is for 5.56 and is threaded to 1/2-28. It is NOT for .30 caliber. We have a .30 caliber rated muzzle device in production that will be threaded to 5/8-24. For more information on calibers and thread pitches, please review the SAAMI technical information Thread Application Guide, available here: https://saami.org/technical-information/firearm-suppressor-thread-and-socket-drawings/
Drew –
Would this qualify as a “sacrificial brake” (like the KeyMicro Brake) for the wolfman while shooting super sonic ammunition? If so, can I send you my barrel to pin and weld?
Blackout Defense –
We do not do pin and weld as a standalone service. Please contact your local gunsmith for assistance.
vinsanityb (verified owner) –
Will this work with the Omega 36m suppressors with Keymo?
Blackout Defense –
Our Keymo muzzle devices are compatible with Dead Air’s Keymo adapter.
stephen.tiek (verified owner) –
The Keymo Hybrid 5/8 x 24 is made for 300blk correct? Or is there a different one coming later. Thanks
Blackout Defense –
Please refer to the spec sheet, which is one of the images on the product page. Our 5/8-24 thread pitch muzzle devices have a bore diameter of .354″.
Mason E –
Will this work for Wolfman with KeyMicro adaptor?
Mason E –
Will this work for Dead Air Wolfman with KeyMicro adaptor?
Blackout Defense –
Yes.
JP (verified owner) –
The Keymo Hybrid Flash Hider
John s –
If the bore diameter on the 1/2×28 is .334, can it be used on 30 cal?
Blackout Defense –
We do not recommend our 1/2-28 muzzle device for .30 cal ammunition. Although the bore diameter on our 1/2-28 muzzle device is larger than the diameter of a .30 cal bullet, the safety of this is dependent on the muzzle and barrel bores being absolutely concentric, as guaranteed by a competent gunsmith using an alignment rod. The safer – and our recommended and preferred – approach is instead to select our 5/8-24 muzzle device, which has a larger bore diameter, for that ammunition.
Thomas –
Will the 1/2-28 work for a 6mm arc safely without a smith? My understanding is it should be fine as long as there is at least .03″ clearance. Granted that’s if it’s perfectly aligned. I should have roughly .09 clearance.
Blackout Defense –
Best practice is to go to a gunsmith, however, an alignment rod should be used regardless.
Matthew –
Does this brake act as a sacrificial baffle? If not, do you have any plans on making an Omni directional brake that acts as a sacrificial baffle and not require timing?
Blackout Defense –
This brake is not designed to act as a sacrificial baffle. We do have plans on designing a brake as you describe.
Bob –
Will this fit the dead air key macro adaptor? Also 300 blackout
Blackout Defense –
Our 5/8-24 is compatible with .300 Blackout.
Blackout Defense –
These are separate and unrelated questions. 1. Our Keymo muzzle devices are not compatible with the Keymicro adapter. 2. Our Keymo muzzle devices in 5/8-24 thread pitch are compatible with .300 Blackout ammunition.
Russ –
Is your Keymo Hybrid muzzle brake compatible with the Dead Air Nomad suppressor?
Blackout Defense –
Yes. Dead Air advertises that the The Nomad 30 is compatible with the Xeno and KeyMo mounting system.
Michael Costanza Jr. –
Is the length of this Keymo Hybrid bring a 13.9 to a legal 16 inches with the proper shim.
Blackout Defense –
Yes. Our Keymo muzzle devices are 2.82″. With a conservative estimated of 0.6″ thread overlap, the overall length after installation on a 13.9″ barrel – even without shimming – is 16.12″.
Kyle –
Are the wrench flats on the model longer than Dead Air and SOLGW Keymo flash hiders?
I have an 11.5″ BCM barrel and an 11″ Troy Alpha Rail w/ front sight and in order to clear the handguard with my Sandman, I need a little under a 1/4″ clearance.
jeradr –
Is this legal in California on a featureless build?
Blackout Defense –
No. This is considered a flash hider in California.
Scott (verified owner) –
will this fit a sig spear 308?
Blackout Defense –
You will need to select our Sig MCX trigger when it is back in stock.
Blackout Defense –
This muzzle device is treated as a flash hider in California because we advertise this as having the ability to hide the flash to a degree.
Landon Treanor –
Firstly, I love this muzzle device. I want to get a blast shield for it and Ideally, that would be the Dead Air Pyro 2.0. Is this even possible?
JP –
Will the 5/8-24 muzzle device fit my 9” sig spear in 300blackout? I read something about the need for an adapter because of the sig spear’s barrel taper, but I am new to the platform so I haven’t figured out these details entirely yet.
Manuel –
Any clue when they’ll be in stock again? These are winning me over design-wise but if they’re never in stock I’ll have to try something else out.