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Posted: 2/2/2015 10:03:43 AM EDT
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I've been debating this one for awhile and need some help. I would like to buy a AAC M-4 can for my Colt M-16A1. My understanding is that this is one of the better cans for my full auto application. While I do own a few 7.62 MG's and would like to suppress them as well, my first (conquest) if you will, is to have my 16 quitter. I feel that if I buy the bigger can I won't get as much suppression, db reduction as I would on the specific.223 can. I would like to suppress my MM23e/21e with one can for each cal. But lets stay with the original question.
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Quoted:
I've been debating this one for awhile and need some help. I would like to buy a AAC M-4 can for my Colt M-16A1. My understanding is that this is one of the better cans for my full auto application. While I do own a few 7.62 MG's and would like to suppress them as well, my first (conquest) if you will, is to have my 16 quitter. I feel that if I buy the bigger can I won't get as much suppression, db reduction as I would on the specific.223 can. I would like to suppress my MM23e/21e with one can for each cal. But lets stay with the original question. Thanks The concept of using one .30 can QD suppressor (Quick Detach)for all rifles is for people who are on a tight budget and can only afford one suppressor. If you can afford multiple transferable machine guns im going to assume you can afford multiple suppressors. With cost no longer being a factor you really should buy cans specific to each caliber and if possible specific to each firearm. A 7.62 can on 5.56 rifle will loose some db reduction compared to a 5.56 can on a 5.56 rifle and it will also be unnecessarily long, heavy and expensive. Putting a 2 lbs massive 7.62 suppressor on the end of a light weight 6-8lb M16 is kind of stupid IMO. There are lots of good full auto rated cans out there. AAC, Surefire, Gemtech, YHM all make full auto rated suppressor in both 5.56 and 7.62. My personal favorite being Gemtech because of their line of light weight titanium suppressors but other manufacturers are coming out with them now as well. My M16 with a Gemtech GMT-556LE same as their current "Patrolman" model. 
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A 7.62 can on 5.56 rifle will loose some db reduction compared to a 5.56 can on a 5.56 rifle and it will also be unnecessarily long, heavy and expensive. Putting a 2 lbs massive 7.62 suppressor on the end of a light weight 6-8lb M16 is kind of stupid IMO.
I guess this is exactly what I was trying to ask/say, but in adding to this question. How much db would I lose on the larger can on my M-16? I mean could one hear the dif or would only specometer crazy a$$ hearing machine be able to detect? |
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You can look at some of the suppressor tests on youtube. It seems that both 7.62 & 5.56 are around 165 decibels unsuppressed, and 132 decibels suppressed. The numbers on the 5.56 through a 7.62 can don't change this much - usually less than one or two decibels.
There are also 7.62 cans that do as well as dedicated 5.56 cans - the Silencerco Specwar 7.62 is a very good multi-caliber can. It is longer, and a bit heavier, but it does it's job very well. Dedicated 5.56 cans are usually smaller & lighter than 7.62 cans, so you have to decide what is more important to you. Right now, there are a couple of new 7.62 cans on the market that I want to see tested before I'll buy a new rifle can - these are the Silencerco Omega and the Dead Air Sandman -L. The Omega is very light, and the Sandman videos out make it sound great, but I want some real sound testing done. Good luck in your search, Bob S. |
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The 762 can will be heavier/longer than the 556 version of the same can.
The 762 will have more volume, so suppress better...but bigger bore compared to projectile, so suppress worse. -The bigger bore also gives some protection against baffle strikes -The bigger volume often gives a different/lower tone which may make it sound quieter or more pleasant |
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Quoted:
The 762 can will be heavier/longer than the 556 version of the same can. The 762 will have more volume, so suppress better...but bigger bore compared to projectile, so suppress worse. -The bigger bore also gives some protection against baffle strikes -The bigger volume often gives a different/lower tone which may make it sound quieter or more pleasant ^^THIS^^....Nailed it. 
I have both 5.56 and 7.62 factory GemTech cans. When each is mounted on 5.56 weapons....the dB's are as close to equal as I can tell. Any discernible difference is in the "TONE" rather than the volume. The 7.62 can is a lower tone than the 5.56 can. If you can afford both....buy both. If not...the 7.62 can makes a fine suppressor for 5.56 ammo. |
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Quoted:
A 7.62 can on 5.56 rifle will loose some db reduction compared to a 5.56 can on a 5.56 rifle and it will also be unnecessarily long, heavy and expensive. Putting a 2 lbs massive 7.62 suppressor on the end of a light weight 6-8lb M16 is kind of stupid IMO. I guess this is exactly what I was trying to ask/say, but in adding to this question. How much db would I lose on the larger can on my M-16? I mean could one hear the dif or would only specometer crazy a$$ hearing machine be able to detect? There is very little weight & length difference between a 7.62 & a 5.56 can. You probably won't be able to tell the difference in sound reduction with your ear, either. Don't buy anything lightweight for an FA application, and use a brake mount. |
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