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Link Posted: 12/27/2020 4:08:33 PM EST
Link Posted: 12/27/2020 4:18:07 PM EST
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is that a true dissipator?
Link Posted: 12/28/2020 7:48:03 AM EST
[Last Edit: 12/28/2020 10:07:28 AM EST by TREETOP]
Link Posted: 12/28/2020 10:58:48 AM EST
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Originally Posted By mike_nds:



That's hot. But how much does it weigh?
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yeah.... she tips the scales close to 9.5# Aesthetic as frig, weighs like a pig
Link Posted: 12/28/2020 11:42:52 AM EST
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Originally Posted By TREETOP:


Dissipator was a word first coined by Bushmaster, for a barrel with a gas block at the carbine location and the pinned FSB at the rifle location. This one has midlength gas.

https://www.AR15.Com/media/mediaFiles/146/image7-1705888.jpg
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Originally Posted By TREETOP:
Originally Posted By togadelic:

is that a true dissipator?


Dissipator was a word first coined by Bushmaster, for a barrel with a gas block at the carbine location and the pinned FSB at the rifle location. This one has midlength gas.

https://www.AR15.Com/media/mediaFiles/146/image7-1705888.jpg



it may have been coined by bushy


but I think of a true one as a 20 inch rifle, cut down to fsb still at 12 rifle gas port position

like the ones in nam



Attachment Attached File
Link Posted: 12/28/2020 12:17:47 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By togadelic:



it may have been coined by bushy


but I think of a true one as a 20 inch rifle, cut down to fsb still at 12 rifle gas port position

like the ones in nam



https://www.AR15.Com/media/mediaFiles/152525/AR-15-Gas-Systems-Barrel-Lengths_jpg-1752114.JPG
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Originally Posted By togadelic:
Originally Posted By TREETOP:
Originally Posted By togadelic:

is that a true dissipator?


Dissipator was a word first coined by Bushmaster, for a barrel with a gas block at the carbine location and the pinned FSB at the rifle location. This one has midlength gas.

https://www.AR15.Com/media/mediaFiles/146/image7-1705888.jpg



it may have been coined by bushy


but I think of a true one as a 20 inch rifle, cut down to fsb still at 12 rifle gas port position

like the ones in nam



https://www.AR15.Com/media/mediaFiles/152525/AR-15-Gas-Systems-Barrel-Lengths_jpg-1752114.JPG

This is the correct answer.

FSB w/ gas block at mid-length it a "mock dissipator", but has been called dissipator by everyone.
Link Posted: 12/28/2020 6:28:16 PM EST
Link Posted: 12/28/2020 7:05:23 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TREETOP:


They were never called Dissipators until Bushmaster used that term. I know it's semantics, but a true "Dissipator" is whatever the company who coined the term used the term to represent. You're free to call it whatever you'd like, I know what someone means when they call a magazine a clip, also. No big deal to me.
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Originally Posted By TREETOP:
Originally Posted By togadelic:
Originally Posted By TREETOP:
Originally Posted By togadelic:

is that a true dissipator?


Dissipator was a word first coined by Bushmaster, for a barrel with a gas block at the carbine location and the pinned FSB at the rifle location. This one has midlength gas.

https://www.AR15.Com/media/mediaFiles/146/image7-1705888.jpg



it may have been coined by bushy


but I think of a true one as a 20 inch rifle, cut down to fsb still at 12 rifle gas port position

like the ones in nam



https://www.AR15.Com/media/mediaFiles/152525/AR-15-Gas-Systems-Barrel-Lengths_jpg-1752114.JPG


They were never called Dissipators until Bushmaster used that term. I know it's semantics, but a true "Dissipator" is whatever the company who coined the term used the term to represent. You're free to call it whatever you'd like, I know what someone means when they call a magazine a clip, also. No big deal to me.



it's cool


just wondering what you meant, and interested in the rifle length gas version myself,  love ya brotha
Link Posted: 12/28/2020 8:17:43 PM EST
Link Posted: 12/28/2020 8:35:15 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By SecretSquirell:

This is the correct answer.

FSB w/ gas block at mid-length it a "mock dissipator", but has been called dissipator by everyone.
View Quote



My Colt factory built CHP rifle has mid length gas.



Link Posted: 12/28/2020 8:45:15 PM EST
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Originally Posted By waywaup:



My Colt factory built CHP rifle has mid length gas.

https://i.imgur.com/uNtqQPd.jpg

https://i.imgur.com/5CPj1Zc.jpg
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Originally Posted By waywaup:
Originally Posted By SecretSquirell:

This is the correct answer.

FSB w/ gas block at mid-length it a "mock dissipator", but has been called dissipator by everyone.



My Colt factory built CHP rifle has mid length gas.

https://i.imgur.com/uNtqQPd.jpg

https://i.imgur.com/5CPj1Zc.jpg

That's because everyone is smart and realized rifle-length gas was a bad idea. Still, the OG original was a cut-down rifle.
Link Posted: 12/29/2020 12:41:09 AM EST
To call anything "Mock" or "True" at this point is an exercise in silliness.

The Colt 605 concept was a cut-down 20" barrel with a full-length gas system from 1965.  Brownells now makes new clones of them.

A Bushmaster Dissipator was a 16" barrel carbine with a carbine length gas block under the handguards.  It was a term used in their catalog.  I owned a pre-ban factory upper in 99.

The only "Dissipators" I know Colt made were carbine-length gas systems for the CHP in 2002.

It's now just a term.

Just like kleenex, or xerox.

I like my Spike's Tactical upper with midlength gas system.  It's just as much a Dissipator as my first Bushmaster.

Best,
JBR

Link Posted: 12/29/2020 12:42:33 AM EST
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Originally Posted By waywaup:



My Colt factory built CHP rifle has mid length gas.

https://i.imgur.com/uNtqQPd.jpg

https://i.imgur.com/5CPj1Zc.jpg
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Originally Posted By waywaup:
Originally Posted By SecretSquirell:

This is the correct answer.

FSB w/ gas block at mid-length it a "mock dissipator", but has been called dissipator by everyone.



My Colt factory built CHP rifle has mid length gas.

https://i.imgur.com/uNtqQPd.jpg

https://i.imgur.com/5CPj1Zc.jpg


Wow!  Did you win one of the auctions from earlier this year?

Best,
JBR
Link Posted: 12/29/2020 7:59:45 AM EST
[Last Edit: 12/29/2020 12:45:29 PM EST by waywaup]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Hellion-Productions:


Wow!  Did you win one of the auctions from earlier this year?

Best,
JBR
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No, I bought it from Gander Mountain back in 2016.

The barrel has 2012 2002 date code.
Link Posted: 12/29/2020 10:10:07 AM EST
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Originally Posted By waywaup:

No, I bought it from Gander Mountain back in 2016.

The barrel has 2012 date code.
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Originally Posted By waywaup:
Originally Posted By Hellion-Productions:


Wow!  Did you win one of the auctions from earlier this year?

Best,
JBR

No, I bought it from Gander Mountain back in 2016.

The barrel has 2012 date code.


Still, she's a beaut.  Congrats.

Best,
JBR
Link Posted: 12/29/2020 12:45:00 PM EST
[Last Edit: 12/29/2020 12:46:34 PM EST by waywaup]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By waywaup:

No, I bought it from Gander Mountain back in 2016.

The barrel has 2012 2002 date code.
View Quote


Typo on my previous post, Date code is 2002.


Link Posted: 1/2/2021 3:43:12 PM EST
[Last Edit: 1/2/2021 3:44:24 PM EST by Strela]
My version of a "Product Improvement Program" Model 605.

No, it's not a "true" 605 in that it doesn't have a rifle length gas system.

It does have what I thought a modernized 605 would have, including a KAC 3-prong suppressor mount instead of an original 3-prong FH on a 15" bbl, KAC rail, A1 removable carry handle w/true slickside upper, upgraded A1-style PG and upgraded A1 stock w/integral QD socket.

Attachment Attached File

Attachment Attached File

Attachment Attached File

Attachment Attached File


Color is Cerakote Federal Standard Field Drab. I liked the crossed cannons and "U.S. Rifle"-marked LRB lower.

It's really a handy little rifle.
Link Posted: 1/2/2021 4:46:52 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Hellion-Productions:
To call anything "Mock" or "True" at this point is an exercise in silliness.

The Colt 605 concept was a cut-down 20" barrel with a full-length gas system from 1965.  Brownells now makes new clones of them.

A Bushmaster Dissipator was a 16" barrel carbine with a carbine length gas block under the handguards.  It was a term used in their catalog.  I owned a pre-ban factory upper in 99.

The only "Dissipators" I know Colt made were carbine-length gas systems for the CHP in 2002.

It's now just a term.

Just like kleenex, or xerox.

I like my Spike's Tactical upper with midlength gas system.  It's just as much a Dissipator as my first Bushmaster.

Best,
JBR

View Quote


Thank you. The worst part about the term "Mock Dissipator" was that the people who use it tend to have their definition backwards.
Link Posted: 1/2/2021 6:40:57 PM EST
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Originally Posted By Strela:
My version of a "Product Improvement Program" Model 605.

No, it's not a "true" 605 in that it doesn't have a rifle length gas system.

It does have what I thought a modernized 605 would have, including a KAC 3-prong suppressor mount instead of an original 3-prong FH on a 15" bbl, KAC rail, A1 removable carry handle w/true slickside upper, upgraded A1-style PG and upgraded A1 stock w/integral QD socket.

https://www.AR15.Com/media/mediaFiles/6163/605O_jpeg-1760557.JPG
https://www.AR15.Com/media/mediaFiles/6163/605L_jpeg-1760560.JPG
https://www.AR15.Com/media/mediaFiles/6163/605A_jpeg-1760562.JPG
https://www.AR15.Com/media/mediaFiles/6163/605X_jpeg-1760565.JPG

Color is Cerakote Federal Standard Field Drab. I liked the crossed cannons and "U.S. Rifle"-marked LRB lower.

It's really a handy little rifle.
View Quote


Nice! How did you source the A1 stock? Love it.
Link Posted: 1/2/2021 7:09:00 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By 5thLegion:


Nice! How did you source the A1 stock? Love it.
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https://www.gunpartscorp.com/products/564730B
Link Posted: 1/2/2021 7:20:54 PM EST
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Originally Posted By waywaup:

https://www.gunpartscorp.com/products/564730B
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Thanks!
Link Posted: 1/2/2021 7:56:28 PM EST
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Originally Posted By 5thLegion:


Nice! How did you source the A1 stock? Love it.
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Originally Posted By 5thLegion:
Originally Posted By Strela:
My version of a "Product Improvement Program" Model 605.

No, it's not a "true" 605 in that it doesn't have a rifle length gas system.

It does have what I thought a modernized 605 would have, including a KAC 3-prong suppressor mount instead of an original 3-prong FH on a 15" bbl, KAC rail, A1 removable carry handle w/true slickside upper, upgraded A1-style PG and upgraded A1 stock w/integral QD socket.

https://www.AR15.Com/media/mediaFiles/6163/605O_jpeg-1760557.JPG
https://www.AR15.Com/media/mediaFiles/6163/605L_jpeg-1760560.JPG
https://www.AR15.Com/media/mediaFiles/6163/605A_jpeg-1760562.JPG
https://www.AR15.Com/media/mediaFiles/6163/605X_jpeg-1760565.JPG

Color is Cerakote Federal Standard Field Drab. I liked the crossed cannons and "U.S. Rifle"-marked LRB lower.

It's really a handy little rifle.


Nice! How did you source the A1 stock? Love it.


Thanks. Actually it's a Cav Arms stock with a GI buttplate assembly. I have some GI A1 stocks, but I wanted the updated materials.

It really should have a CS stock, but there's no way I'd pay the going rate then drill it for a QD socket.
Link Posted: 1/2/2021 8:09:12 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TREETOP:


Dissipator was a word first coined by Bushmaster, for a barrel with a gas block at the carbine location and the pinned FSB at the rifle location. This one has midlength gas.

https://www.AR15.Com/media/mediaFiles/146/image7-1705888.jpg
View Quote


What barrel is that?
Link Posted: 1/3/2021 12:28:33 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Strela:


Thanks. Actually it's a Cav Arms stock with a GI buttplate assembly. I have some GI A1 stocks, but I wanted the updated materials.

It really should have a CS stock, but there's no way I'd pay the going rate then drill it for a QD socket.
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Thought it looked newer- good info thanks. 👍
Link Posted: 1/5/2021 12:20:39 PM EST
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Originally Posted By Beauseph:
The waiting game sounds like a better choice. I'm not in a rush, this is just more niche than what I'm used to delving in. But gosh damn these rifles not only make sense but they look so damn good, too.

Especially with a can, wow.

I see people mentioned Faxon as having the upper/barrel available at one time. Anyone else with a good rep to watch?

If in a few months I can't make any progress I'll look into "frankenstein" working a barrel up. Seeing as its for someone else I wouldn't want to chance the reliability potentially being an issue with a rifle length system.
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There is a PSA Dissy upper for sale on the EE right now.  (not my ad)
Link Posted: 1/7/2021 7:57:01 PM EST
Last pic of mine before it gets rebuilt into something a bit different. I forgot I had it until tonight.


Link Posted: 1/7/2021 8:12:50 PM EST
Link Posted: 1/12/2021 8:53:53 AM EST
Some of these are pictured somewhere earlier in the thread I'm pretty sure. The bottom one if obviously a work in progress. As you can see, I'm pretty much a KISS/keep it stock kinda guy. No rattle canning, no optics (the whole point of a dissy for me is the longer sight radius), etc. I did find some nice rifle length drop in handguards that I really like, but of course they're not available anymore. That style of handguard is becoming harder and harder to find it seems. I may have to free float one if I make more.


Link Posted: 1/19/2021 5:24:15 PM EST
I'm in the process of piecing together a dissipator-ish rifle, however, I'm stuck. If possible, I need a measurement for the distance between the forward face of the upper receiver and the rear face of the front sight gas block. Or, the distance from the front rim of the barrel extension to the machined lip the handguard cap touches. I've found stated measurements 12.0, 12.7 and 12.75, but without an actual rifle upper to measure, I'm reluctant to pin anything. Thanks.
Link Posted: 1/19/2021 6:10:11 PM EST
[Last Edit: 1/19/2021 6:12:04 PM EST by isullivan]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Daxter:
I'm in the process of piecing together a dissipator-ish rifle, however, I'm stuck. If possible, I need a measurement for the distance between the forward face of the upper receiver and the rear face of the front sight gas block. Or, the distance from the front rim of the barrel extension to the machined lip the handguard cap touches. I've found stated measurements 12.0, 12.7 and 12.75, but without an actual rifle upper to measure, I'm reluctant to pin anything. Thanks.
View Quote


Decimal equivalent looks pretty close to 12.7”. This is an ADCO Dissy.

Attachment Attached File
Attachment Attached File
Link Posted: 1/19/2021 10:41:24 PM EST
So im looking at putting a dissy together.  I have a matching Windham Bushmaster reciever set and a Spikes chf 18" govt profile barrel.  Would cutting this to 16" and adding taper pin cuts for an A2 post be acceptable?  

Thanks.
Link Posted: 1/20/2021 1:59:54 PM EST
Thank you Sir, looks like 12.7 to me as well.
Link Posted: 1/20/2021 8:22:02 PM EST
[Last Edit: 1/20/2021 8:30:53 PM EST by MadKaw69]
I'm glad to see someone else using the AR-10 handguards! They feel great and just look right. I have them on mine. I've been shooting CMP matches for years! She shoots.

Link Posted: 1/20/2021 8:48:08 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MadKaw69:
I'm glad to see someone else using the AR-10 handguards! They feel great and just look right. I have them on mine. I've been shooting CMP matches for years! She shoots.

https://lh3.googleusercontent.com/pw/ACtC-3fqosEjW2D50TILORmd-GcAtzIY3YjW-1sfa2j-XTRFHEVeP1Ow18oHUQTp5Wk2xDhDxQ76YBt42bJwsI67j­Pv6w24Q7cv_RO2FnuyGzcAMJheNBn3AwSo36Gjlzjt3gZC7QcOZ-VTc8LZAz870aZAzxA=w2400-h1464-no?authuser=0
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Nice...
Link Posted: 1/21/2021 9:10:26 AM EST
Link Posted: 1/21/2021 9:51:36 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MadKaw69:
I'm glad to see someone else using the AR-10 handguards! They feel great and just look right. I have them on mine. I've been shooting CMP matches for years! She shoots.

https://lh3.googleusercontent.com/pw/ACtC-3fqosEjW2D50TILORmd-GcAtzIY3YjW-1sfa2j-XTRFHEVeP1Ow18oHUQTp5Wk2xDhDxQ76YBt42bJwsI67j­Pv6w24Q7cv_RO2FnuyGzcAMJheNBn3AwSo36Gjlzjt3gZC7QcOZ-VTc8LZAz870aZAzxA=w2400-h1464-no?authuser=0
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Love the look and I found some at Brownells (based on the BRN-10 note below), but, alas, they only work with round handguard caps. Pretty sure all my Dissy's have triangles.
Link Posted: 1/21/2021 1:52:28 PM EST
These are the Nodak HGs. I see they have the heat shields now. But I will say, after a CMP match, I never have noticed them getting warm. I can't speak for doing a full-auto mag dump or anything. :) They have held up well the last bunch of years. I just ordered a set of the mid-length Proto HGs to make a faux mid prototype.
Link Posted: 1/21/2021 4:56:56 PM EST
Link Posted: 1/22/2021 8:21:52 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Daxter:
I'm in the process of piecing together a dissipator-ish rifle, however, I'm stuck. If possible, I need a measurement for the distance between the forward face of the upper receiver and the rear face of the front sight gas block. Or, the distance from the front rim of the barrel extension to the machined lip the handguard cap touches. I've found stated measurements 12.0, 12.7 and 12.75, but without an actual rifle upper to measure, I'm reluctant to pin anything. Thanks.
View Quote


What Rail Length Do I Need? A Guide

12.73"
Link Posted: 1/22/2021 5:56:51 PM EST
Saw SinistralRifleman's AWB retrospective and it made me weirdly nostalgic for the first AR I ever built when I was living behind enemy lines. So I rebuilt a close approximation of it.



SOLGW East India match upper made in to faux dissy with an Aero M16A4 clone lower. Fun fact, this lower has the Aero "A" on the right side of the receiver that all the cloners got butthurt over, which makes this lower older than the blem A4 lower I bought from Aero back in 2016. I also still have the FailZero NiB BCG and Radion Raptor LT I bought so many years ago, although the BCG now sits in the "very last resort" parts bin (the gas key isn't even staked). Holosun is a 403R as opposed to the 403B I had, but I like the radial wheel better than the push button set up.
Link Posted: 2/4/2021 1:26:58 AM EST
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