On this installment of Silencer Sunday we will do a comparison of the Griffin Armament M4SD II vs the Gemtech Halo. Both silencers are full auto rated 5.56 cans that attach to mil-spec flash hiders. They attach in slightly different ways but both seem simple and a great idea for those who do not intend on replacing muzzle devices or want to use a thread on can.
The Gemtech Halo attaches by the bottom portion of the can that unscrews. The flash hider is put inside the bottom half and the can is simply slid over top and screwed down until it’s tight.
The Griffin M4SD II is much simpler. The back portion of the can has a tab that locks in place. Simply put the can on the flash hider then lock the tab down and you are done.
I was excited to try both of these cans and find them both a very good idea. If you already have a good silencer collection and like to hunt with a variety of people who do not own NFA, these are a good solution to allow your friends to use. Or if you just don’t care to change muzzle devices and worry about thread on cans these work fantastic. I attempted to lock them down onto a Battlecomp as they are roughly the same size as a bird cage, but the notches are not mil-spec and did not work for me.
The Gemtech Halo specs are:
21 oz, 1.5″ diameter, 7.2″ long, made of 300 Stainless Steel with Inconel 718 baffles.
The M4SD II specs are:
17.4 oz, 1.5″ diameter, 6.6″ long, made of 17-4 Stainless Steel with Inconel 718 baffles.
As you can tell, both silencers are very similar and have a very similar feature set. The Gemtech Halo retails for around $750 and the Griffin Armament M4SD II retails for $995. Using them both, I felt that they were very easy to use and both had their benefits and draw backs. I felt as though the mounting system on the Halo was clunky and took a small amount of time to get on and off especially compared to the M4SD II. The Griffin M4SD II was super quick to get on and off, and was slightly lighter. If I were to choose between them I believe it would have to be which ever was in stock at the time. The Griffin M4SD II has the muzzle end of the can tapered in what looks like an effort to direct any additional blast away from the shooter and down range, which I like. The Gemtech is flat with their signature end cap design. Both were shot on a 10.5″ SBR 5.56 rifle using M855 from the same lot. To the ear both were very similar and suppression was about what I expected from a bird cage mounting system. I get the feeling that both of these silencers will last forever and would serve you well.
To the ear, the Gemtech was slightly quieter to me, but both were about as loud as I would expect on a short 5.56 gun. The Griffin M4SD II had a good tone and both performed as advertised and as I expected.
Thanks for reading.
Jason Hallmark
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ccoker
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556 cans can be a tad lighter and cheaper.. but 30 cal cans are much more flexible.
I run my Templar Tactical 30 cal cans on my 5.56, 6.8 and various 30 cal guns.
What is the advantage of buying a dedicated 5.56 can versus buying a 30 cal with a thread adapter? I’ve heard the 30 cal can is actually quieter due to more volume capacity.