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Thread: Griffin Armament M4-SD II

  1. #11
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    Quote Originally Posted by dmaxfireman View Post
    Oh well their loss, trying to convince myself that getting away from the A2 FH is acceptable after I had my heart set on keeping it. Plenty more options for me to choose from.
    What about the gemtech Halo? It will run on an a1 or an a2 with peal washers to set the timing. It is on the heavy side but from my understanding it is built to take some abuse. I went with it because I was trying to avoid buying expensive flash hiders for every gun I wanted to run it on. I've also had pretty good luck with gemtechs support although i can't say if that is the normal.

  2. #12
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    Griffin rates pretty well.
    Last edited by prdubi; 09-29-12 at 13:02.

  3. #13
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    I had a long conversation with Evan from Griffin this afternoon, brother of the first guy (Austin) that I spoke with. Several issues were cleared up and we worked things out. I am not one to bash a company, just for the sake of bashing, just pass along experiences, and after having an issue and having Evan seek me out to make things right makes him an alright guy in my book.

    I will be going ahead with the M4-SD can as of now. I was told they should be shipping in roughly 4 weeks so I will send payment out and have a form 3 started on it.

    Will keep this thread updated as to how everything goes.

  4. #14
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    As promised

    M4-SD II arrived the other day and I mailed my Form 4 yesterday. Can is very solid, the spring mechanism to detach is a little awkward and will take some getting used to. Will be very interesting to see how easily (or not) the can removes after a range session. I have 3 uppers to test it on. 2 will have the griffin compensator (10.5 and 14.5) and one will have an A2 hider (16)

  5. #15
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    I don't see the M4SD II on their site... Do you just have to call them to purchase?

  6. #16
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    Quote Originally Posted by slowkota View Post
    I don't see the M4SD II on their site... Do you just have to call them to purchase?
    The suppressor is very new. We just finished a production run of them last week. I am taking one to SHOT this year but it will not be on our website for another few weeks. We are getting a different graphic designer/ coding guy to overhaul the look and presentation of our website. It will take a little while. If you have questions about it feel free to email me.

    Evan@griffinarmament.com

    It metered 34 db reduction yesterday on a 14.5" m4. Poi shift was 1.3" at 100 yards in the prone magazine supported 4x acog with xm193. Sound was 139db on a 10.3" mk 18. All sound measurements were taken using m855

    As far as inventory we have plenty right now.
    Last edited by quillbro; 11-27-12 at 10:51.

  7. #17
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    Quote Originally Posted by dmaxfireman View Post
    M4-SD II arrived the other day and I mailed my Form 4 yesterday. Can is very solid, the spring mechanism to detach is a little awkward and will take some getting used to. Will be very interesting to see how easily (or not) the can removes after a range session. I have 3 uppers to test it on. 2 will have the griffin compensator (10.5 and 14.5) and one will have an A2 hider (16)
    dmax,

    Here is a little video I put together that might shed some insight onto how to attach and detach the suppressor. I hope you enjoy your can as much as I have been enjoying them



    http://www.youtube.com/watch?v=iY59Y...1&feature=plcp
    Last edited by quillbro; 11-30-12 at 04:04.

  8. #18
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    I went with a representative from my dealer to the range so we could test fire this suppressor last night.

    We only put about 60 rounds through it but overall I am happy with my purchase thus far. The suppressor was tested on a 10.5 LMT with the M4-SD II compensator and a 14.5 LMT with a standard A2 birdcage flash hider.

  9. #19
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    Quote Originally Posted by quillbro View Post
    The suppressor is very new. We just finished a production run of them last week. I am taking one to SHOT this year but it will not be on our website for another few weeks. We are getting a different graphic designer/ coding guy to overhaul the look and presentation of our website. It will take a little while. If you have questions about it feel free to email me.

    Evan@griffinarmament.com

    It metered 34 db reduction yesterday on a 14.5" m4. Poi shift was 1.3" at 100 yards in the prone magazine supported 4x acog with xm193. Sound was 139db on a 10.3" mk 18. All sound measurements were taken using m855

    As far as inventory we have plenty right now.
    Evan, what's the difference between the M4SD and the M4SDII? Will you offer both, is the II replacing the original?

  10. #20
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    Quote Originally Posted by TCBA_Joe View Post
    Evan, what's the difference between the M4SD and the M4SDII? Will you offer both, is the II replacing the original?
    The M4SD is a legacy product that will no longer be manufactured.

    However it did help in developing the M4SDII. The original M4SD was based off of prior design from the Spartan and Spartan II, but incorporated a fast attach mechanism which has since evolved even further on the M4SDII.

    The M4SD was made of 4130 and had 17-4 baffles.

    The only shared feature the new M4SD II has with the older model is the similar mounting system, but even that has been improved significantly. The outer suppressor body is aesthetically pleasing due to being OD Ground on centers after being fully Tig welded with comprehensive weldments throughout. It has a 316L tube, rear mount, and end cap and has a full 718 Incolnel baffle stack as well as wire EDM'd Fast attach geometry and a wire EDM'd bore. Even though we are a smaller company than the major players in the market this can competes with the best of them. It also gains the ability to be used in conjunction with any of the 4 M4SD muzzle devices as well as a standard A2 birdcage. We HIGHLY recommend that the suppressor only be mounted to muzzle devices that are using shims vs crush washers. It has a fairly liberal bore diameter at .311 at the front cap but A2 FH's have a wide tolerance range.

    The M4SDII also reduces sound impulse by 34db which places it amongst the top performers in the industry. We are excited to bring it to market after years of development and are anticipating this as a successful product for years to come.

    In short.... yes it is better than the M4SD, and as soon as we can make the web revisions the M4SD will be no more.

    We are also coming out with a shorter version of the M4SDII (M4SDK) to compete with some of the new shorter cans. This will be released ~end of Q1 2013.



    Last edited by quillbro; 12-01-12 at 01:48.

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