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Posted: 8/23/2006 7:53:04 AM EDT
Is there a difference in accuracy in the dissipator rifles with 16" barrels versus the 20" length rifles?

Does the 4" make a difference on paper?

Link Posted: 8/23/2006 9:37:03 AM EDT
at longer ranges the greater velocity of the 20" will drop/drift less.
Link Posted: 8/23/2006 10:36:32 AM EDT
I love the dissipator but at longer ranges the 20" rules the roost. But for that I have a 20" Armalite AR-10T
Link Posted: 8/23/2006 10:43:57 AM EDT

Link Posted: 8/23/2006 10:57:15 AM EDT
If you mean Bushmaster (real) Dissipators, they are just a carbine barrel with full-radius (rifle) sights:

You get the same performance as with a carbine.

If you mean the DPMS-style 16" rifle-gas barrel, I have no idea, and I defer to the posts above - more distance = more drop form lower muzzle velocity.

No one has a real pic of the DPMS barrel with no handguards online that I can find. It has rifle gas system on a 16" barrel, and they open the gas port up more for reliable cycling with less barrel past the FSB. Here's the barrel I mean (at Del-ton):
Link Posted: 8/23/2006 11:01:28 AM EDT
[Last Edit: 8/23/2006 11:02:31 AM EDT by Tomislav]
This has probably been asked a bazillion times, but what the heck:

Why doesn't the Dissapator just use the rifle-length gas system? Would the gas port have to be enlarged or somesuch?

ETA: OK, I see in engineer2001's link that DPMS makes what I was talking about; Is there a technical reason Bushmaster doesn't do the same?
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