Rubber_Duck
Member
This pretty much sums it up for me. Go with the mid-length.
AR-15 Noob in need of advice: Bushmaster 16" HBAR M4 Dissipator
- Thread starter Jordan85
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This pretty much sums it up for me. Go with the mid-length.
aspade
Member
twofourthree73
Member
On of the configurations I like from a asthetic standpoint and from a funtional one is a midlength gas system on a 16th inch barrel with a rifle lenght free float rail with flip up front sights.
highorder
Member
seconded.
I bought my middy for that purpose, but found the I really like the midlength C6 oval (M4 style) handguards from Cav Arms. In their time of need, I felt that they needed my money more than YHM.
stiletto raggio
Member
Thirded. This will be the configuration of my next AR upper.
On a 16" barrel the rifle-length gas system probably won't function properly. This is why the carbine and mid-length gas systems exist in the first place. You need about 17-18" of barrel in order for the rifle-length gas system to run right.
On a 20" barrel there is no reason to use anything other than the standard rifle-length gas system.
highorder
Member
finally found a reason for the dissapator:
http://www.productwizard.com/sureifrem510a.html
unless of course you went with the carbine version of the same integral light
http://www.productwizard.com/sureifrem510a.html
unless of course you went with the carbine version of the same integral light
Dissapators came out when Colt was messing around with prototypes and discovered the rifle gas could be made to work on a carbine, kinda. They also were using the FSB ONLY, no extra gas blocks.
Bushmaster offered them much later, it gives the longer sight radius iron sight shooters thought they could use for more accuracy. Since that was largely at competitive events, it might have helped. A lot of things were being tried.
Having rifle length handguards means being able to put your hand way out to the front sight, which some competitive shooters prefer for support and muzzle control. They say they get on target faster. Many have now switched to tubes with no rails, the standard FSB has been cut down or eliminated, and optics are common. At this point, almost any carbine regardless of gas could then be a dissapator if the tube covers the gas block and approaches the muzzle.
It begs the question, is it about using the FSB, or not? Should the definition even include tubes? Who even has enough clout to make a decision?
Lacking any clearly defined parameters, I will TELL you all.
A dissipator has to use rifle handguards and an issue FSB, active or not.
There, it's settled before it even becomes a problem.
Now go ahead and abuse it, y'all will anyway.
Bushmaster offered them much later, it gives the longer sight radius iron sight shooters thought they could use for more accuracy. Since that was largely at competitive events, it might have helped. A lot of things were being tried.
Having rifle length handguards means being able to put your hand way out to the front sight, which some competitive shooters prefer for support and muzzle control. They say they get on target faster. Many have now switched to tubes with no rails, the standard FSB has been cut down or eliminated, and optics are common. At this point, almost any carbine regardless of gas could then be a dissapator if the tube covers the gas block and approaches the muzzle.
It begs the question, is it about using the FSB, or not? Should the definition even include tubes? Who even has enough clout to make a decision?
Lacking any clearly defined parameters, I will TELL you all.
A dissipator has to use rifle handguards and an issue FSB, active or not. There, it's settled before it even becomes a problem.
Now go ahead and abuse it, y'all will anyway.
Zerodefect
member
No real disadvantage for a dissy. Works just as well as a middy for me. I midddy might be smoother, but a carbine seems more reliable to me. But that's really stretching it, there really isn't much difference. Just avoid rifle gas systems on a 16" 18-20 is better for rifle length.
Plus's:
-rifle length handguards, can reach out further like a 3gun style grip or Magpul grip stance.
-Forearm is long enough to add a top rail at the front and hang a flashlight in a Larue offset mount off to your support side with out crowding the forearm and ruining your grip stance.
-longer sight radius
-looks awesome
Not really sure about the heavy barrel, that would hurt me, but seems to help others.
Is it an a2 or a3 dissy? The a3 flattop upper would be my pick. I avoid a1/a2 perm cary handle types because I allways use a 1x optic.
Plus's:
-rifle length handguards, can reach out further like a 3gun style grip or Magpul grip stance.
-Forearm is long enough to add a top rail at the front and hang a flashlight in a Larue offset mount off to your support side with out crowding the forearm and ruining your grip stance.
-longer sight radius
-looks awesome
Not really sure about the heavy barrel, that would hurt me, but seems to help others.
Is it an a2 or a3 dissy? The a3 flattop upper would be my pick. I avoid a1/a2 perm cary handle types because I allways use a 1x optic.
highorder
Member
To me, a dissapator must have carbine gas on a 16" bbl, and a non-gassed FSB at the rifle position.
They are obsolete in the age of the FF tube. Period.
They are obsolete in the age of the FF tube. Period.
For a while, I was looking into buying a Dissipator, as I could no longer focus on the front sight of an M4 or standard carbine-length AR, but could focus on the front sight of a Dissipator or M16-length weapon, and didn't really want to carry the rifle-length weapon, and my chief (PD) did not allow optics. Finally, optics were allowed, and I dropped the Dissipator idea.
highorder
Member
Most Dissy's I've seen use a standard 16" (civilian) M4 profile barrel.
I just checked Bushmaster's website. It says the Dissy comes with a heavy profile barrel. You may have seen other manufacturer's versions of the Dissipator, but from what I saw a real Dissy has a heavy barrel.
What ever the case, I do think they look cool with the full length handguards. I just don't like the weight. I think Adco sells their own version called the "Crusier" or something. It has a lighter profile barrel as do others, I'm sure.
Getting back to the original post, what's the deal? Is a guy offering to give you this Dissipator in trade for something that you have that he wants? Or are you going to trade something in to a gun shop to get this and the Dissipator is what the shop has?
The truth is that this is the way that the Black Rifle disease gets started. You'll get something and wish you had gotten something else. The next thing you know you'll have two. If for one reason or another, it's a good deal for you, grab it. Swapping a barrel on an AR is a simple process. You could sell the barrel and get another.
What ever the case, I do think they look cool with the full length handguards. I just don't like the weight. I think Adco sells their own version called the "Crusier" or something. It has a lighter profile barrel as do others, I'm sure.
Getting back to the original post, what's the deal? Is a guy offering to give you this Dissipator in trade for something that you have that he wants? Or are you going to trade something in to a gun shop to get this and the Dissipator is what the shop has?
The truth is that this is the way that the Black Rifle disease gets started. You'll get something and wish you had gotten something else. The next thing you know you'll have two. If for one reason or another, it's a good deal for you, grab it. Swapping a barrel on an AR is a simple process. You could sell the barrel and get another.
highorder
Member
The OP is two years old.
IMO, the Dissy was obsolete then too.
ghostman1960
Member
Mid length all the way.
slvrbulit12
Member
I could not make up my mind on just one type of build.
My first build was a 16" mid length flat top I built for my son. I am slowly putting together the parts for a three gun type of rifle with 18" SS barrel & VTAC free float tube. My last will be a dissapator type with A1 or A2 upper receiver, government profile 16" barrel with mid gas under the stock rifle length handguards & A1 buttstock.
My first build was a 16" mid length flat top I built for my son. I am slowly putting together the parts for a three gun type of rifle with 18" SS barrel & VTAC free float tube. My last will be a dissapator type with A1 or A2 upper receiver, government profile 16" barrel with mid gas under the stock rifle length handguards & A1 buttstock.
Muttt
Member
Don't ever buy an AR. Pick the parts and style of AR that you want (no preferences are really any better than any others, it's all personal preference) and don't worry about which is better, the differences are so slight the average shooter will never really be able to tell. You can build for 1/3 cheaper than any company will sell you one that is already built. You don't have to replace parts you don't like and can buy the ones you want to begin with (which also saves you money). And, you don't have to pay the company to put the rifle together for you.
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