Griffin Armament Muzzle Brake (New product)

[HPLLC]

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The M4SD II muzzle brake is one of our new products for the fall.

My brother is running one of our new brakes on his 12.5" piston MRP from LMT. His gun was shooting ~1MOA with the brake which was really impressive compared to my 10.5" carbine which was shooting maybe 3.5 or even 4MOA with a compensator.

He may just have a really good barrel, or maybe the ammo really needed the extra 2.5" of barrel, but the 12.5 was really shooting nice.

The brake does a great job of mitigating recoil and has lower flash than most competing brakes so it's really not a bad choice for an all around tactical muzzle device either especially if you are running a longer barrel like a 16" or 18" and using good quality military ammo with a flash retardant.

These are $79.95 street priced so they offer a very high value for the dollar when compared against other suppressor mount brakes like AAC or Surefire. These are made of 17-4PH H900 treated to 44 RC and black oxide finished. They weigh 2.7 ounces, and are 2.25" OAL which means they can be permed to make a 14.5 barrel 16" legal.

 

[Temp9]

Re: Griffin Armament Muzzle Brake (New product)

Love it. I hate brakes with top "compensating" ports for AR's. I'm definitely buying one of these when funds permit.

Got a picture of it mounted?

 

[HPLLC]

Re: Griffin Armament Muzzle Brake (New product)

We only shot video, so the best I can do is a still.

 

[Temp9]

Re: Griffin Armament Muzzle Brake (New product)

Thanks! Too bad I missed the T&E program. Definitely looks like a great product.

 

[scatterbrains]

Re: Griffin Armament Muzzle Brake (New product)

I looked on your site any plans for a 30 cal version? Thanks

 

[HPLLC]

Re: Griffin Armament Muzzle Brake (New product)

At the moment our 30 caliber version is our RSTA suppressor mount. We didn't have a plan for a non suppressor mount variant but that may make sense to offer one in the future.

It's an interesting concept.

 

[Ballista One]

Re: Griffin Armament Muzzle Brake (New product)

From an design standpoint,why did you use 17-4 stainless to manufacture the device? Wouldn't 1144 be a better choice of material? 1144 is easier to machine and provides more robust finishing options than 17-4.

 

[HPLLC]

Re: Griffin Armament Muzzle Brake (New product)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BallistaOne</div><div class="ubbcode-body">From an design standpoint,why did you use 17-4 stainless to manufacture the device? Wouldn't 1144 be a better choice of material? 1144 is easier to machine and provides more robust finishing options than 17-4. </div></div>

17-4 provides high strength, coupled with corrosion resistance and good high temperature properties that have made it a successful material for use inside sound suppressors. Surefire uses 17-4PH and AAC claims to use 15-5 which is more expensive and differs in that it is vacuum arc remelted (an arguably better process for forming raw materials) but 15-5 has chemical properties that are about exactly the same as 17-4. I say claims because it would probably be impossible to tell even if the material was sent to a lab for analysis, so saying 15-5 would be more cost effective than buying the material that is twice as expensive and raises the cost of each part by ~$4 which is huge for parts sold for under $100 that have dealer margins.

1144 is stressproof steel- it is about 30% weaker than 17-4, has a high carbon content, and no chromium. No chromium would suggest reduced resistance to corrosion over 4130 or 4140 which are significantly more corrosion prone than 17-4.

The hardness of 1144 is Rockwell C 17, and from reading around it appears that it is difficult to harden without cracking, or micro-cracking the material in ways that can in result in catastrophic failure and injury to people.

I'm not suggesting suitable parts could not be made from 1144, but I do think that 17-4 is superior for use in a suppressor mount on account of higher strength, higher corrosion resistance, and higher temperature resistance.

Our non suppressor mount 7.62 comp is made of pre-hardened 4130 which is ~32RC, so it is fairly similar to the material and hardness properties used in A2 flash suppressors which are a proven durable weapon component.

 

[scatterbrains]

Re: Griffin Armament Muzzle Brake (New product)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Griffin Armament</div><div class="ubbcode-body">At the moment our 30 caliber version is our RSTA suppressor mount. We didn't have a plan for a non suppressor mount variant but that may make sense to offer one in the future.

It's an interesting concept. </div></div>

Yup saw that, here in new germany we cant have a muzzle device that will accept a suppressor so hence the question. Ill BM your site and check back hopefully ill see one in the future.

 

[HPLLC]

Re: Griffin Armament Muzzle Brake (New product)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: NJHKAR</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Griffin Armament</div><div class="ubbcode-body">At the moment our 30 caliber version is our RSTA suppressor mount. We didn't have a plan for a non suppressor mount variant but that may make sense to offer one in the future.

It's an interesting concept. </div></div>

Yup saw that, here in new germany we cant have a muzzle device that will accept a suppressor so hence the question. Ill BM your site and check back hopefully ill see one in the future.
</div></div>

Does that mean no one can have A2 flash suppressors? Those mount sound suppressors. I don't know where they delineate the difference between a suppressor mount and a muzzle device.

Our M4SD II will also mount to some of the YHM standard muzzle devices. Obviously the people there using YHM stuff think they are not using suppressor mounts.

My google foo may be weak but it appears that NJ is allowed either a threaded barrel, OR a flash suppressor. As a muzzle brake is not a flash suppressor, the threaded muzzle brake should not be a problem, unless you intended to mount a sound suppressor which may constitute a threaded barrel & flash suppressor where the muzzle brake has threads.

That wouldn't apply to the brake above because it has grooves, so it would seem that when perm attached, a suppressor attachment would also be legal because that would be "A flash suppressor" but not "A threaded muzzle."

 

[K_4c]

Re: Griffin Armament Muzzle Brake (New product)

I recently checked out your YouTube channel and watched your video on the making of your company. Badass brother!

I'm going to order one of your brakes for my SR-15 E3 I just picked up.

Best of luck to you and your business! That is living the American dream.

 

[ker2222]

Re: Griffin Armament Muzzle Brake (New product)

any shot of different calibers and thread pitches????

specifically say.....oh i don't know....maybe a 6.5/7.62 in the dreaded grendel thread pitch?

Just asking....break looks awesome

 

[HPLLC]

Re: Griffin Armament Muzzle Brake (New product)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: K_4c</div><div class="ubbcode-body">I recently checked out your YouTube channel and watched your video on the making of your company. Badass brother!

I'm going to order one of your brakes for my SR-15 E3 I just picked up.

Best of luck to you and your business! That is living the American dream.

</div></div>

Thanks for your thoughts- I appreciate it.

One of the customers made a video on the brake, and ours isn't professionally edited yet.

http://www.youtube.com/watch?v=kaE-ILOh3DI&t=0m25s[

As far as 6.5 grendel- we haven't ventured there yet. It's hard enough to tackle the more standard configurations. What thread did they decide to use on it?

These companies that are moving into proprietary threads like DTA make it difficult to keep up. I've talked to probably 5-10 DTA guys who are just beginning to realize the non-standard threads are making it troublesome to find muzzle devices and sound suppressors that are compatible. It's unfortunate they went that route.

 

[HPLLC]

Re: Griffin Armament Muzzle Brake (New product)

Tactical Gun Review did a review of the M4SD II muzzle brake. They are going to post a written review but for now here's the video.

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[HPLLC]

Re: Griffin Armament Muzzle Brake (New product)

Tactical Gun Review's article