Help support WeTheArmed.com by visiting our sponsors.

Author Topic: Dissipator Build  (Read 12174 times)

only1asterisk

  • Just some guy, you know?
  • Senior Contributor
  • *****
  • Posts: 2389

  • Offline
Dissipator Build
« on: June 30, 2011, 12:14:31 AM »
The Dissipator is a really handy configuration that doesn't get enough attention.
Bushmaster uses a carbine length gas system under the handguards as a rifle length gas system lack enough dwell time to be fully reliable.  The front sight base on the Bushmaster isn't connected to the gas system.  Other makers use a midlength gas system under the handguard.


I wonder if an intermediate gas system would fit if you uses a micro gas block...


WeTheArmed.com

  • Advertisement
  • ***

    Grant

    • Senior Contributor
    • *****
    • Posts: 7843

    • Offline
    Re: Dissipator Build
    « Reply #1 on: June 30, 2011, 08:04:05 AM »
     Always thought Dissipator's were about the coolest LOOKING AR15 out there :rock.

      Eventually/someday I am going to get a 16" upper for my AR15, probably be a dissipator. 
    Montana"I’d say the worst part of all this is the feeling of betrayal,           but I’m betting the part where they break in here and beat us to death might be worse.”

    Outbreak

    • NRA Basic Pistol Instructor, Certified Sig P-Series Armorer
    • WTA Staff
    • Senior Contributor
    • *****
    • Posts: 11464
    • Outbreak Monkey ^

    • Offline
    Re: Dissipator Build
    « Reply #2 on: June 30, 2011, 05:12:26 PM »
    They're the coolest looking non-NFA AR-15's. I like how they give the illusion that they're shorter than they really are. And long guns are about the only thing I can think of where shorter is better.
    TexasOutbreak

    I take my coffee black...like my rifles.

    I absolutely despise Glocks. That's why I only own two.

    I'm glad that your chains rest lightly upon you. --JesseL

    only1asterisk

    • Just some guy, you know?
    • Senior Contributor
    • *****
    • Posts: 2389

    • Offline
    Re: Dissipator Build
    « Reply #3 on: July 14, 2011, 05:00:18 PM »
    [crickets] Chirp! [/crickets]

    Atlas8193

    • Firearm Aficionado and Historian
    • Senior Member
    • ***
    • Posts: 732
    • Beware the peanut gallery...

    • Offline
    Re: Dissipator Build
    « Reply #4 on: July 14, 2011, 09:55:14 PM »
    I had a "debate" about the dissipator build with one of the guys I used to work with. I told him it was a rifle length hand guard w/ a carbine barrel and gas system. He argued it was just a carbine length barrel. I knew I was right.

    I was planning to do one in 7.62x39mm. Ordered a TiN BCG from DPMS for it too...then I just lost interest in the project.
    Although personally I am quite content with existing explosives, I feel we must not stand in the path of improvement.-Winston Churchill

    GeorgeHill

    • Co-Founder
    • WTA Staff
    • Senior Contributor
    • *****
    • Posts: 21854
    • The Ogre
      • MadOgre.com

    • Offline
    Re: Dissipator Build
    « Reply #5 on: July 14, 2011, 10:08:24 PM »
    I remember stripping down Dissipator - it had a full length gas system.. The gas tube went all the way to the front sight.   :shrug
    South CarolinaCo-Founder of WeTheArmed.com
    The Ogre from MadOgre.com.

    Vires et Honestas
    Malo periculosam, libertatem quam quietam servitutem.
    http://www.madogre.com/

    Atlas8193

    • Firearm Aficionado and Historian
    • Senior Member
    • ***
    • Posts: 732
    • Beware the peanut gallery...

    • Offline
    Re: Dissipator Build
    « Reply #6 on: July 14, 2011, 10:24:42 PM »
    I remember stripping down Dissipator - it had a full length gas system.. The gas tube went all the way to the front sight.   :shrug

    Maybe it depends on who/when it was made? The reliable ones I heard about (back when I was still interested in the project) were carbine barrels and gas systems with rifle length sights.

    In my web travels, I heard all sorts of for/against, cool/ugly, useful/pointless arguments. The only thing I found to be interesting was the concept of more "rail-estate" with a carbine length barrel...in which point you're probably using an optic of some sort and the benefit of the rifle-length sight radius is null and void. And I hate having all those rails all over the place; which is why I bought the SIG556 classic-not the SWAT-and installed the rail kit. My AR-15 M-forgery upper is a flat-top w/ a MBUIS and an MOE hand guard on it.

    I eventually came to realize I hold to the philosophy of "go carbine or go rifle".
    Although personally I am quite content with existing explosives, I feel we must not stand in the path of improvement.-Winston Churchill

    GeorgeHill

    • Co-Founder
    • WTA Staff
    • Senior Contributor
    • *****
    • Posts: 21854
    • The Ogre
      • MadOgre.com

    • Offline
    Re: Dissipator Build
    « Reply #7 on: July 14, 2011, 10:28:44 PM »
    It was a Bushmaster... admittedly an early one.  But the gas tube was full length.  16 inch barrel. 
    South CarolinaCo-Founder of WeTheArmed.com
    The Ogre from MadOgre.com.

    Vires et Honestas
    Malo periculosam, libertatem quam quietam servitutem.
    http://www.madogre.com/

    Canthros

    • 100% normal hunam, doing normal hunam things, unsuspiciously
    • Contributor
    • ****
    • Posts: 1292

    • Offline
    Kentucky

    GeorgeHill

    • Co-Founder
    • WTA Staff
    • Senior Contributor
    • *****
    • Posts: 21854
    • The Ogre
      • MadOgre.com

    • Offline
    Re: Dissipator Build
    « Reply #9 on: July 14, 2011, 11:23:03 PM »
    Well it wasn't my rifle so I don't know exactly, but a bigger gas port makes sense.
    South CarolinaCo-Founder of WeTheArmed.com
    The Ogre from MadOgre.com.

    Vires et Honestas
    Malo periculosam, libertatem quam quietam servitutem.
    http://www.madogre.com/

    only1asterisk

    • Just some guy, you know?
    • Senior Contributor
    • *****
    • Posts: 2389

    • Offline
    Re: Dissipator Build
    « Reply #10 on: July 15, 2011, 12:31:23 PM »
    Well it wasn't my rifle so I don't know exactly, but a bigger gas port makes sense.


    The DPMS version had rifle length gas.  Lots of people report no problems are the port is opened up a bit, but there are just as many that never get them to run right. 

    only1asterisk

    • Just some guy, you know?
    • Senior Contributor
    • *****
    • Posts: 2389

    • Offline
    Re: Dissipator Build
    « Reply #11 on: July 15, 2011, 05:20:39 PM »
    Did a little measuring.  A micro gas block should just fit under standard handguards at the intermediate gas position.

    GeorgeHill

    • Co-Founder
    • WTA Staff
    • Senior Contributor
    • *****
    • Posts: 21854
    • The Ogre
      • MadOgre.com

    • Offline
    Re: Dissipator Build
    « Reply #12 on: September 02, 2011, 10:23:35 PM »
    I would still love to have Crusader Dissy Build.  That would be baws.
    South CarolinaCo-Founder of WeTheArmed.com
    The Ogre from MadOgre.com.

    Vires et Honestas
    Malo periculosam, libertatem quam quietam servitutem.
    http://www.madogre.com/

    only1asterisk

    • Just some guy, you know?
    • Senior Contributor
    • *****
    • Posts: 2389

    • Offline
    Re: Dissipator Build
    « Reply #13 on: September 02, 2011, 11:16:15 PM »
    I would still love to have Crusader Dissy Build.  That would be baws.


    Make it so!

    Help support WeTheArmed.com by visiting our sponsors.