User Panel
Posted: 7/29/2002 9:30:50 PM EDT
Could some one please explain what the purpose of a Dissipator AR-15 is?
The only advantage I see over a regular 16" carbine is the distance between the front and rear sight. I think the term is "sight radius". Wouldn't a dissipator be more complex, due to the second gas block. With one to mount the front sight, a second one under the handguard to actually function as the gas block. And have added weight from the full size handguard, compared to a standard carbine? Yes, they do look cool, but am I missing something else here? Ben |
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You have it right - it's the increased sight radius. However, it is not more complicated since there is still only one gas block. The front sight housing no longer serves that purpose. It is simply a sight platform.
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To "Dissipate" heat better than the short 16 inch handguards. The increased sight radius, is however in my opinion, a more significant improvement.
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Also, along with what Avatar said, with more of the barrel covered by the handguards, there is less bare barrel hot barrel exposed to accidentally touch and get a nice little burn from.
Basically you get a rifle that has the sight radius and handling of a fullsize, but with a carbine length barrel for close quarters work. |
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In other words " you get a rifle with all the bulk and mass of 20", but you do not get the benefit of the increased velocity" I can see why Colt discontinued the design in 1965. |
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Please provide proof, link, or other documentation. estoner |
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Why would a company "BM" sell a CQB weapon with an increased sight radius. It will simply increase the time to aquire target.
I was simply making a critique of the nonsensical functionality of the design, but since you mention it, I agree. Dissipators are about the ugliest ARs I have seen. Diss_ipator = [>(] |
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I did think of one advantage of the long front hand guards.
With the increased length the hand guards will make an excellent "butt scratcher". I can see Bushmasters new Slogan Better than a Corn Cob by a long shot |
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At first glance, I found the Dissipator aesthetically displeasing. Looks aside, the weapon's design makes good sense after some time at the range with a brand new Dissipator. The time needed to aquire a quick and precise sight picture with this setup is not noticably different to me versus a standard 16" setup. A more effective advantage for a Dissipator user who has had a good deal of trigger time with 20" barreled AR15/M16 weapons is the familiarity he has with the distance between the sights allowing the picture to come in quickly and more naturally giving him a better combat result which is far more important than aesthetics. I look at the Dissipator model as a good marriage between two very different and effective AR15 setups, each designed for a specific type of combat, giving it a dual purpose role without changing uppers.
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I thought that's what the ribs on the new COLT collapsible stock were for! |
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Bushmaster is my brand but I agree, Dissipators are uuuuuuuggggly.
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To go with that Corn Cob concept, I guess you could say that they are Butt uuuuuuuggggly |
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Exactly. The ability to make accurate use of the A2 sights for longer range shots, with the handiness of a carbine. Throw on one of Kurts A3 Tac brakes and it totally changes the way the rifle looks. |
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I was at the local range the other day and some guy was shooting a Bushy Dissipator. They give off a hell of a muzzle flash. Man I love muzzle flash (of course I wouldn't if I was in war)!!
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What he said. |
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Yes, we're so used to ARs with 20" A2 profiles and 16" CAR profiles that the Dissipator's appearance can be a bit unnerving.
Nevertheless, the longer sight radius is a good thing for longer range shooting (or for more accurate shorter range shooting. Plus, the longer handguards stops those brain-dead "grasp that hot barrel" ouchies that sometimes happen with a CAR-style AR. The BM Dissy will have the exact same operational behavior (gas system, recoil, etc.) as a 16" CAR15 style carbine. "Dissipator" is just their trade name. The design has nothing really to do with any 'dissipation' of heat. Heat dissipation is affected by lots of things (including thickness of bbl in chamber area). The handguards just stop *you* from getting burned. If you get a Bushy Dissipator, see if you can order one with the turned (reduced diameter) barrel or fluted barrel to cut down the weight. I've had my BM Dissipator flattop for 3+ years now (parts gun, Colt postban lower, A1 trapdoor buttstock) - works without problems and is my go-to AR. I have an Elcan 3.4 scope on mine for my tired eyes, yet I can quickly (enough) engage targets. Don't care if its "ugly" as long as it works! Bill Wiese San Mateo, CA |
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Ahhh, estoner or is it rnader ??? no matter, whichever alias your using this time your still a TROLL !!!
Lets see here, in this thread,www.ar15.com/forums/topic.html?id=112937 you make these claims regarding fixed telestocks. Quoted: it's a Bushmaster thing for Wanna-bes Quoted: FALARAK, You are wrong as usual. Bushmaster was the first go get BATF approval for a fixed version of the telescoping stock. All the other "me-too" companies emulated Bushmaster's fixing technique. Colt would never offer such a farcical product. Really escrotum ???? then how is it that colt now offers the model 6400c ??? A wannabe poser m4 BWAHAHAWAWHAHAHAAAAA !!!!!!!!!! Gee, lets see then, just who did they COPY on this one ???? hmmmm escrotum ???? Hey estoner ....... As for dissipators, I really don't care one way or the other. They do look cool with a A2 flash hider or Kurts A2 brake though. |
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My 2 cents on Dissipators:
The original AR's were rifles with long handguards etc. While carbines are handier in close quarters, they have limitations for some folks. If you like the rifle style, a dissipator gives you that in a handier style. All target rifle ARs are rifles. The long handguards give more hand hold positions. The long sight radius gives more precise aiming. And I've heard that almost everyone in 3 gun matches use long handguards. Which 3 dissipators to choose? Dissipators are automatically heavier than carbines because of these factors. The long handguards are much weightier and there is an additional gas block under the handguards. So an HBAR dissipator is heavier than a carbine (7.68 lbs) but it's not a disadvantage for target/long range shooting. The lightest dissapator is the M4 version and with A2 sights can weigh less than 7.1 lbs. Throw in some armalite handguards and 6.9 is the norm. Then you can have a rifle style carbine that weighs less than the 7.2 lbs of the carbine, yet just as handy. It's great to have choices. M4-AK |
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Who cares what someone things they look like? A rifle isn't a car or a wife - it's a tool used to put holes in things!
The Dissipator (Eliminator etc.) allows a longer sight radius AND most important for me, a longer handguard to grip. Grabbing the hot barrel of one of my tiny handguarded rifles is one of those lessons that you hate having to learn (again!). For those with eyes on the far side of 40 the longer radius is much kinder as close focus become more and more of a chore as the eyes age (sucks). If you're just plinking or shooting off of a bench the handguards don't get a bunch of use. |
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I kind of like the dissipator. Mostly for the longer handguards that people have mentioned before. I don't have an M4, but I have burned myself on my AK a number of times. I also prefer the smaller handguards over the larger M4 ones, though I know they make small standard diameter ones. It's just personal preference I guess. I currently have an order with Bushmaster for a dissipator upper with an M4 barrel. It will weugh a little more than a carbine, but not much. And it will certainly be lighter than my 20" HBAR. Different strokes for different folks really. But I for one like it.
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The muzzle flash was one of the first things I noticed about the Dissy, it was impressive compared to my 20" Bushy A2. It just made the weapon seem a lot more potent when you get a loud report with a nice blast coming out of the muzzle. I kinda enjoy it too, but in a non combat situation of course.
Oh yeah... I have a BM A2/M4 with both the original 16" upper and national match 20" upper. The 16" with the brake shoots fireballs and absolutely mandates both plugs and muffs. If you shoot in a line with other shooters, they're gonna take blasts in the face all day. |
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And exactly at what point and time have YOU added anything of substance to this thread??? Or for that matter on the entire board? Every post I have ever seen by you has been either negative, slamming someone, or for no other purpose than to deliberately try and make someone mad. |
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Hawkeye, and what exactly are you adding or trying to accomplish with this post?????? Spectre came in this thread to mix it up with me...not to make any meaningful contribution to the discussion....If he wants to go round again I can accommodate him. Spectre amuses me. His mindless slanders only go to prove how ignorant and frustrated he is. It is only a matter of time before he is reduced to threats of physical violence again. Now it seems you are of the same ilk. Must be a Bushmaster thing. |
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Actually I was going to ask the same question yesterday, but just figured I'd forget about it. Then you go an jump on someone else for something you yourself did. Bit hypocritical isnt it?
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NO... actually Spectre drew first blood when he came in just to harass me. I was just giving him the courtesy of a reply in kind. Then you butted in taking the thread further off track. Maybe you should read his post again before you further shove your foot in your mouth. WTF does this have to do with the technical merits of the Dissipator design.
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About the same as this I suppose. |
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Form, fit and function....I was pointing out the technical merits of the design and illustrating it's alternative usefulness and versatility, since it makes no since otherwise. It is after all a chameleon by design. If your opinion differs then that is your prerogative. Make a counter argument or stand down. |
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Yes I do feel different. I think Dissi's are very fine rifles and fill a good nitch.
I will yield to your mastership though. I am no match for someone as versed as yourself. I would never have discovered such technical design benefits of using full length AR handguards as a anal scratching device. I bow before you. |
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Hawkeye, I love it when you guys para-phrase and quote out of context.
Here are a few of my other observations on the design. As you can see I'm not alone on these points.
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I think you mean "niche" or maybe "notch" (as in butt crack)??? possible freudian slip???? .... hahahaha couldn't resist.
The facetious nature of your post is noted....excellent exit strategy...later!! |
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How typical escrotum !!! pay no attention to the FACTS and just come around and troll. thing is, you only have a few weeks left and you can change your name again to avoid your bullshit posts, just remember, rnader was too easy. As usual, you shoot your mouth off and get your ass kicked by your own comments !!!!! My comments on the dissipators are on my post at the bottom. The main body I devoted to you because I just wanted to point out how worthless you are and HOW FULL OF SHIT YOU ARE !!!!! Colt would never offer such a farcical product. BWAWAHAHAWAWHAHAHAAAAA!!!!!!! COLT COPIED BUSHMASTER !!! hehe.......... A "POSER WANNABE" rifle and stock ROTFLMAO !!!!! |
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Why don't you two POS take your argument to a different thread? This started out as an interesting topic.
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You really got me this time!!!! Jarrod will be real proud of you. Maybe he'll give you a Bone "Sick-em boy.....Sick-em" as he holds your collar and "strokes you" hahahahaha.....what an image.... |
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In before the lock. Great topic for a discussion. to bad people couldn't keep it that way!
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