Anyone have a fluted BM Dissipator?

A

AMHsix

New member
I'm thinking about getting a Bushmaster Dissipator with a fluted barrel, to make it a bit lighter and balanced. I was just wonder if I should get it done or not.

Knowing what you know now, would you still have your Dissipator fluted or would you spend the $50 on something else?

If you have a non-fluted Dissipator, would you have gotten it fluted or is it fine just how it is?

Thanks!
 
get a millineal 16" upper from fulton armoury. it weighs alot less and has the same full sight radius like the dissapater. stick it on a bushmaster lower and you'll be in buisness.
 
M4-profile Dissipator

M4-profile Dissipator

M4-profile Dissipator

Such a beast exists. Check the Bushmaster website under Barrel Assemblies. I think it is available in both pre and post ban.

As for the millenial FA upper, this barrel is 1 in 12" twist, not as versatile as a 1 in 9".
 
I have a standard (non-fluted) Dissipator. I like it a lot, but I do wish it were fluted (there was a very long wait for fluted barrels when I got mine a couple of years ago just before ARs were banned here in California). Mine does feel a little muzzle-heavy to me.

I've been thinking of getting another 16" upper, probably with a fluted barrel, maybe free-floated. I've seen the M4 barreled Dissipators, and they are a little lighter than even the fluted standard Dissipators, but the tradeoff is that you have a pretty thin barrel over most of it's length. I would think this would hurt acccuracy. The fluted heavy barrel should be nearly as stiff (some would say more stiff, though I don't think so) as the standard heavy barrel.

I know the M4 configuration is popular, but I'm not sure why - isn't it sort of the worst of both worlds (lacks the stiffness of a heavy barrel, weighs more than a thin barrel)? Other than being considered "cool," what is the advantage of the M4? Why would you want a barrel with some thin sections and some heavy ones? It seems like this was to facilitate attaching a grenade launcher on military rifles, but this should't be much of an advantage to most civilians. This is a sincere question. Maybe the handguards provide additional stiffness to the thin barrel under them? If this is the theory, then I guess it wouldn't make much sense to free-float an M4 barrel. Comments?

Doug
 
The M4 barrel for the Dissipator was incorporated to simply save weight.

Many Dissipator owners felt that the handling characteristics of this neat carbine could be improved by lightening the barrel. And they began shipping of their heavy-barrelled Dissipators off to guys like Kurt's Kustom Firearms who would turn down the barrel underneath the handguard to reduce weight.

Then, a lot of prospective Dissipator buyers and longtime Dissipator owners who were reluctant to ship off their guns to custom gunsmiths began hounding Bushmaster for a M4-profile Dissipator via AR15.com, e-mails, and phone calls.

Bushmaster gave in and its been available for a few months. (Apparently, BMI did do a limited run of these carbines for a Department of Energy contract few years back, but civilians sales of these carbines were limited to contract overruns. BMI never intended to offer this configuration to the public.)

As for the "worst of both worlds" statement, that can be said about virtually everything of human design...

-.40 S&W... smaller holes than a .45, lower capacity than the 9mm
-shotguns... less range than a rifle, less portable than a pistol
 
8200RPM,

Regarding your comment about my comment ("worst of both worlds"), I don't think your examples really apply. The statements are true, but CAN be turned around into positives (which I think was your point). For example: "The .40 S&W gives a bigger hole than a 9mm and more capacity than a .45). In other words, you are trading one advantage for another.

But in the case of the M4 barrel, I don't see ANY practical advantage to the strange M4 configuration - a thin barrel would be even lighter, and EQUALLY accurate if light weight is the primary goal, and a fluted heavy barrel would be almost as light and more accurate (stiffer) if better accuracy is the goal. I don't see how the M4 has any advantage over these. If it does, I'm interested in hearing about it (I'm trying to decide what to get myself, and the M4 looks kind of cool, but the configuration just doesn't seem to make any sense to me - why hang a chunk of heavy barrel out past where it will do any real good?).

Doug
 
DougB,

You are absolutely right. I retract what I said about "worst of both worlds".

A pencil barrel Dissipator would be THE perfect light weight carbine. Bushmaster recently introduced a thin barrel shorty. Unfortunately it was released at the same time with the M4-Dissi.

I would assume that if this thin barrel was available earlier, AR15.com folks would have hounded for this configuration instead.
 
Bag the fluting and spend the $50 on a good muzzle break. I have the AK 74 break on my Dissipator. It works great but looks like a turd. I would get the Mini V-Comp next time.

The Dissiapator is lighter than an H-BAR, that;s good enough for me. Hitting the target is more important than saving a half pound. Go with the Carbine if you need the least weight.
 
I am interested in any real-world experience, as well. My Dissipator is very nice, but a few ounces less up front might make it handle even better.

Or, I could just throw a bottle of oil and some cleaning supplies in the tail end. :)

A muzzle brake is a benefit on the AR-10, but I don't think the Dissipator has enough muzzle flip to warrant the extra weight and noise that a brake gives you. Now a flash-hider would be :cool: .
 
I am getting a Mini Y-Comp muzzle break on my Dissipator, also a post-ban M4 fixed tele-stock.

The fluting is going to compensate for the muzzle break, extra gas block, light buttstock and heavier barrel to make the rifle as balanced as possible.

I have a Colt Match Target Lightweight, which is great, but I want something a bit different.
 
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