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[ARCHIVED THREAD] - Dissapators (Page 1 of 2)
Posted: 2/2/2005 6:54:10 PM EDT
| Could someone school me on the AR Dissapator, such as history and purpose? Also are Dissapators made from a 16" or 20" barrel or are they sold that way? Thanks guys. |
| The reason they came out with it is to keep the compact size of the 16" CAR and have the same sight post distance as a 20" rifle, more accuracy. The distance from the rear sight to the front post is the same distance as a 20" rifle. A dissapator is basicaly a 20" rifle with 4" sawed off. I really like mine. |
This might be a dumb question, but if I have a 20" HBAR, can I make one out of it? |
You sure can send it to ADCO and have it cut to 16 inches. This would actually be more desirable b/c you would a have a rifle length gas system. |
Which means...? Thanks for the info, this is great. |
It's important that somebody with experience cuts it down, because it also requires that the gas port be opened up for the gun to cycle right. ADCO is good to go...but your local gunsmith whos not an AR guy may not be aware of these things. Just FYI. --Josh |
Actually I would rather hav ea carbine length gas system in a 16" barrel -- the distance from the gas port to the muzzle is almost too short to function properly (without some tweaking, anyway) with a rifle-length gas system in a 16" barrel... |
Sounds like they're could be some issues, if I don't go to a reputable place. If Adco cuts it down, what's the worst that could happen? |
| I have a dissy with a pigtail which makes it cycle softer and slower than a 20 inch gun. It is a sweet setup, however, my nest project will be to cut down a 20 inch tube and drill the gas port 1 drill size at a time. I think this will give the same results for about 80.00 less. I personally feel the dissipator is the best configuration for an ar. |
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Hey guys.. cutting a 20 down to 16 is a great idea because it saves so much weight. Kurt at KKF does this modification, and the famous staff member known as Troy owns one. He may chime in here and tell you how well it works. If you're gonna put rails on your dissy, you want to save all the weight you can, because the more you hang on it the heavier it gets. The gas port does need to be opened up to the proper size to function properly, so I'd let someone like Kurt, or other gunsmith, WHO HAS DONE IT SUCCESSFULLY BEFORE, do the work. I don't know that I'd trust it to someone for their first try. KKF can also do a lightweight conversion on your existing dissy barrel, something you wouldn't have to do if you use a 20" A2. |
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Are the standard Bushmaster dissapators known to have any reliability issues? I suppose they dont, and work just like the m4 type carbines, however, the dissapator is not really a design that has been tested and accepted by the military. My guess is that they would work just as good as the standard m4 barreled ar's, however I could be wrong. |
They work fine. They function the same as a standard 16 inch or M4 configuration. The only difference is they have 2 FSB's. one that is the gas block that is shaved off under the handguards and one that is only a front sight base. |
Nice Rifle!! Here's my humble offering.....  . |
There's just something about the Dissipator's look... both of you guys have nice Dissy's!  And here's my (it's a Bushmaster) humble offering... . |
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The major advantage of the dissipator to me is the greater coverage of the barrel by the handguards compared to the carbines. I have gotten foam, plastic, and blue tarp stuck to my hot barrel. I have also burned my leg with the barrel and my hand front sight tower. Wes @ MSTN says the DD 9.5 rail is popular on his 10.5" uppers for a similar reason. |
ya beat me to it. the sight radius advantage is nuthin compared to not having to smell your leg hair burn. |
The ease of handling a 16" barrel with full sight radius is why I got a kit dissipater with an M4 stock. I haven't shot it much since it shoots 20 MOA to the right with an 8 MOA groups size. The barrel is FUBAR.  I sent it back for repair once, and it came back with the same parts and the same problem: Update: Dissy CONTINUES to shoot WAY to the right, about 20 MOA!. Aside from the FUBAR barrel, the only thing that I would like is a thinner barrel to save weight.I hope this thing gets fixed. Anyway, had I known then what I know now, I would have converted a government profile (light under the handguard), no chrome, 20" upper to a 16" dissy, and saved myself about $80-$100. I have an 11 degree crowning tool; so, no worries there. I don't need a flash suppressor. About the only thing I MAY add is a ventilated free float tube, full length. I've seen some nice ones that are reasonably priced too. DMPS makes a nice ventilated FF tube. Yankee Hill makes a ventilated one where you can add rails where you want them. Fulton Armory has an Anschultz type. I figure anything over $125 is not for me. For me, the dissy is the way to go.Velocity loss from a 20" to a 16" barrel is about 150 FPS: not enough to really make a difference under 400 yards. You'll still be hitting an 18" target. Can anyone tell I am angry?
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The barrel is actually 16", and uncovered would shoot a large fire ball out. The comp is actually 6" off the end of a 12 gauge shotgun barrel. It slipps over the A2 barrel exactly. If I was to do it again, I would make it 2" shorter. It is a fun gun to shoot though. |
The longer the gasses push the bullet before bleeding off into the gas tube the higher the muzzle velocity will be. I also enjoy my Dissy's becuase I can stablize with a rifle stance, holding the handguards further forward than on a carbine, but with less weight than on a rifle. |
Decided to take my Bushmaster Dissipator in a bit different direction… okay, so a WAAAAY different direction!  Thought I’d share it here: (The only thing ya can’t see in these pictures is that I had ADCO turn down my HBar barrel under the handguards to save some weight… & some weight it did save!)    . |
That is such a sweeeeeeeet gun! |
As long as everybody else is throwing in pics of their Dissys, here's my Bushy version back when it had an entry stock and a flare-launcher (I don't have a current pic of it  )... ... and here is my DPMS version which rides in my truck & is one of my favorites... 
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Why thank you sir... I REALLY like how she turned out! |
[ARCHIVED THREAD] - Dissapators (Page 1 of 2)
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