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Posted: 6/26/2023 6:01:45 PM EST
[#1]
Quote HistoryOriginally Posted By 103: My latest throw together. Saw the PSA upper for sale for $200, so I ordered one. They really put that barrel nut on there, lol. Anyway, replaced the set screw in the FSB with a cut piece of gas tube. Swapped barrel to an early Colt M4 cut A2 upper. PSA M4A1 lower for the time being until I can find my old Bushmaster lower this was made for, haha. Otherwise mostly surplus parts I have had sitting around for years in boxes. https://www.ar15.com/media/mediaFiles/106019/image000001_jpeg-2864228.JPG https://www.ar15.com/media/mediaFiles/106019/image000000_jpeg-2864229.JPG That looks great. |
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Posted: 6/27/2023 1:26:01 PM EST
[#2]
Just added this A2 upper to a PSA dissy barrel.
 
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Posted: 6/27/2023 2:25:12 PM EST
[#3]
Quote HistoryOriginally Posted By dump1567: Just added this A2 upper to a PSA dissy barrel. https://i.imgur.com/1V4fVrK.jpg https://i.imgur.com/Ibsg5HC.jpg Very nice. May need to look for an A2 upper and pull my barrel.  |
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OK, USA
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Posted: 6/28/2023 7:20:52 AM EST
[#4]
Do any of you super knowledgeable Dissipator guys happen to have any info on DPMS Dissy barrels? I picked up a DPMS rifle length gas Dissipator barrel off the EE, it has a 1/9 twist and is chrome lined. Just curious on when they were offered/ how long?
Anyway, I opted to swap it out for a different barrel in a existing build and I am really happy how it came out.  S&W M&P sport II for the base rifle, added the FDE B5 stock and grip and a BCM QRF. Tipped off with a Griffin taper mount hammer comp for the hush tube |
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Posted: 6/28/2023 9:37:31 AM EST
[Last Edit: HipSh0T]
[#5]
Quote HistoryOriginally Posted By Str8shot_1985: Do any of you super knowledgeable Dissipator guys happen to have any info on DPMS Dissy barrels? I picked up a DPMS rifle length gas Dissipator barrel off the EE, it has a 1/9 twist and is chrome lined. Just curious on when they were offered/ how long? Anyway, I opted to swap it out for a different barrel in a existing build and I am really happy how it came out. https://i.ibb.co/KFvdVBZ/IMG-1008.jpg S&W M&P sport II for the base rifle, added the FDE B5 stock and grip and a BCM QRF. Tipped off with a Griffin taper mount hammer comp for the hush tube It's more than likely from the Freedom Group era when they owned both Bushmaster and DPMS (2009-2014), and if you look at all the reviews from MidwayUSA it fits the timeline. https://www.midwayusa.com/product/100345838 |
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OK, USA
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Posted: 6/28/2023 9:51:37 AM EST
[#6]
Quote HistoryOriginally Posted By HipSh0T: It's more than likely from the Freedom Group era when they owned both Bushmaster and DPMS (2009-2014), and if you look at all the reviews from MidwayUSA it fits the timeline. https://www.midwayusa.com/product/100345838 Odd thing is, mine is not a HBAR profile. It looks more medium contour to me, I measured it at .730 behind the gas block hump back. |
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Posted: 6/28/2023 11:02:38 PM EST
[#7]
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OK, USA
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Posted: 6/29/2023 7:16:45 AM EST
[#8]
Quote HistoryOriginally Posted By ankratz: https://www.ar15.com/media/mediaFiles/232334/20220118_193641_-_Copy_jpg-2867317.JPG Is that what it looks like when a AK and a AR have a baby? lol I dig it, whats the weight on it? |
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Posted: 6/29/2023 9:25:02 AM EST
[#9]
Quote HistoryOriginally Posted By Str8shot_1985: Is that what it looks like when a AK and a AR have a baby? lol I dig it, whats the weight on it? Quote HistoryOriginally Posted By Str8shot_1985: Originally Posted By ankratz: https://www.ar15.com/media/mediaFiles/232334/20220118_193641_-_Copy_jpg-2867317.JPG Is that what it looks like when a AK and a AR have a baby? lol I dig it, whats the weight on it? |
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Posted: 6/29/2023 10:15:28 AM EST
[#10]
Quote HistoryOriginally Posted By packinheavy: That's an old school A.R.M.S. SIR handguard. I didn't know they made a rifle length version. Quote HistoryOriginally Posted By packinheavy: Originally Posted By Str8shot_1985: Originally Posted By ankratz: https://www.ar15.com/media/mediaFiles/232334/20220118_193641_-_Copy_jpg-2867317.JPG Is that what it looks like when a AK and a AR have a baby? lol I dig it, whats the weight on it? Me either. That is awesome. |
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Posted: 6/29/2023 12:09:02 PM EST
[Last Edit: J_taylor]
[#11]
Quote HistoryOriginally Posted By mcculver5: Me either. That is awesome. Travis Haley Blackwater clone rifle ( not my rifle picture off internet )  Attached File |
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Posted: 6/29/2023 12:10:39 PM EST
[#12]
Quote HistoryOriginally Posted By J_taylor: Travis Haley Blackwater clone rifle ( not my rifle picture off internet ) https://www.ar15.com/media/mediaFiles/548798/001-685755_JPG-2867797.JPG Dang, that's cool. |
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Posted: 6/29/2023 1:37:55 PM EST
[#13]
 Attached FileWorking on mine, started with the PSA upper also, had John Thomas at RAW mill the FSB bayonet lug. |
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TX, USA
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Posted: 6/29/2023 2:15:02 PM EST
[#14]
Okay, that's hot
 Quote HistoryOriginally Posted By ankratz: https://www.ar15.com/media/mediaFiles/232334/20220118_193641_-_Copy_jpg-2867317.JPG |
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Posted: 6/29/2023 3:40:50 PM EST
[Last Edit: ankratz]
[#15]
Quote HistoryOriginally Posted By Str8shot_1985: Is that what it looks like when a AK and a AR have a baby? lol I dig it, whats the weight on it? Ha! Sure, yes :) Weight-wise as you see it it's not bad at all, in fact, quite balanced. Barrel is an FN CHF government profile, so not terrible. The SIR rail is certainly heavier than it needs to be, I just think it looks awesome. After seven years I finally figured out a perfect match to KAC (polymer) Taupe with Cerakote, so I'm working up color schemes for the build. I also found a Sully Stock and picked up a LAW Folder that I'm going to try on it--then it will probably be like carrying an M240, but hey. It will look awesome. Shenanigans:  Attached FileKAC Taupe match (grip is a modified factory piece, CTR is coated):  Attached File |
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Posted: 6/29/2023 5:13:00 PM EST
[#16]
Quote HistoryOriginally Posted By ankratz: Ha! Sure, yes :) Weight-wise as you see it it's not bad at all, in fact, quite balanced. Barrel is an FN CHF government profile, so not terrible. The SIR rail is certainly heavier than it needs to be, I just think it looks awesome. After seven years I finally figured out a perfect match to KAC (polymer) Taupe with Cerakote, so I'm working up color schemes for the build. I also found a Sully Stock and picked up a LAW Folder that I'm going to try on it--then it will probably be like carrying an M240, but hey. It will look awesome. Shenanigans: https://www.ar15.com/media/mediaFiles/232334/20230304_014708_jpg-2868012.JPG KAC Taupe match (grip is a modified factory piece, CTR is coated): https://www.ar15.com/media/mediaFiles/232334/20230218_125720_jpg-2868013.JPG Quote HistoryOriginally Posted By ankratz: Originally Posted By Str8shot_1985: Is that what it looks like when a AK and a AR have a baby? lol I dig it, whats the weight on it? Ha! Sure, yes :) Weight-wise as you see it it's not bad at all, in fact, quite balanced. Barrel is an FN CHF government profile, so not terrible. The SIR rail is certainly heavier than it needs to be, I just think it looks awesome. After seven years I finally figured out a perfect match to KAC (polymer) Taupe with Cerakote, so I'm working up color schemes for the build. I also found a Sully Stock and picked up a LAW Folder that I'm going to try on it--then it will probably be like carrying an M240, but hey. It will look awesome. Shenanigans: https://www.ar15.com/media/mediaFiles/232334/20230304_014708_jpg-2868012.JPG KAC Taupe match (grip is a modified factory piece, CTR is coated): https://www.ar15.com/media/mediaFiles/232334/20230218_125720_jpg-2868013.JPG That top setup is tits. |
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Posted: 6/30/2023 10:26:51 AM EST
[#17]
Quote HistoryOriginally Posted By oldcatawba: https://www.ar15.com/media/mediaFiles/252051/IMG_3788_jpeg-2867902.JPG Working on mine, started with the PSA upper also, had John Thomas at RAW mill the FSB bayonet lug. That's the layout I did with mine. I need to get the bayonet lug taken off now... |
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Posted: 7/9/2023 9:13:29 AM EST
[#18]
Figured this is the place to add: I was having issues getting my Del-Ton 16" rifle gas upper to run reliably with a rifle buffer/A1 stock setup. Removed 2 of the buffer weights and haven't had a malfunction since.
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OK, USA
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Posted: 7/10/2023 2:35:47 PM EST
[#19]
Had a buddy give me the handguards and grip, scored the stock on the EE here so I re configured this one. Will probably build another with a rail and such but I like this one set up as seen here way more!
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TX, USA
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Posted: 7/11/2023 2:57:11 PM EST
[#20]
Quote HistoryOriginally Posted By ankratz: KAC Taupe match (grip is a modified factory piece, CTR is coated): https://www.ar15.com/media/mediaFiles/232334/20230218_125720_jpg-2868013.JPG Can't just post a tease without letting us in on the secret! Absolutely love the build, some tanodized optic would look great on it with the direction you're going. |
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Posted: 7/11/2023 4:32:49 PM EST
[#21]
Quote HistoryOriginally Posted By ankratz: https://www.ar15.com/media/mediaFiles/232334/20220118_193641_-_Copy_jpg-2867317.JPG I freaking love it. Bravo. 
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Posted: 7/11/2023 4:35:46 PM EST
[#22]
Couldn’t remember if I posted this one or not so here ya go:
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VAT
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Posted: 7/29/2023 2:41:27 PM EST
[#23]
Ditched the M5 RAS and went back to the A2 handguards since the weight of the rail negated the weight savings of the lightweight barrel on the Spikes GMP upper. This is a light handy little carbine.
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Posted: 7/29/2023 3:27:03 PM EST
[Last Edit: oldcatawba]
[#24]
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Posted: 8/12/2023 9:42:51 AM EST
[Last Edit: braapJob]
[#25]
Swapped my Dissy from a flat top to an A2 yesterday and realized I made my ideal KISS rifle totally unintentionally. “True” Del Ton Dissipator barrel and FSB. Runs suppressed beautifully with the Sandman while I await my tactical maraca.
 Attached File |
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Posted: 8/24/2023 10:42:39 PM EST
[#26]
Does a low profile gas block fit under the KAC RAS handguards?
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USA
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Posted: 8/25/2023 12:24:31 AM EST
[#27]
Quote HistoryOriginally Posted By ttushooter: Does a low profile gas block fit under the KAC RAS handguards? Sure does. |
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Posted: 8/26/2023 4:33:42 AM EST
[#28]
New option for your dissipator needs:
Anderson AM15 Dissipator Rifle Anderson Dissipator Upper Specs say 1:8 twist, rifle gas. |
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Posted: 8/28/2023 7:37:51 AM EST
[#29]
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Posted: 9/3/2023 12:04:08 AM EST
[#30]
Just a heads up for labor day sales.
PSA Nitride Dissy upper $199 PSA Premium CHF dissy upper $409 I kind of want to FO on the premium one and swap to a A2 upper and then use one of those Surefire A2ish mounts for the supressor. |
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Posted: 9/22/2023 8:30:26 AM EST
[Last Edit: PrincipsPistol]
[#31]
PSA Dissy, almost right... for now anyway. Need a proper switch/cord setup. And an ACOG. Still fantasizing about the MWS config too... Also like the retro ones.
I'm gonna need another Dissy.  Attached File |
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GA, USA
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Posted: 9/24/2023 1:25:11 PM EST
[#32]
Other than PSA, are there any current off-the-shelf barrels that don't step down after the gas block journal and are mid gas?
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Posted: 10/9/2023 7:37:44 PM EST
[#33]
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Posted: 10/10/2023 5:35:36 PM EST
[#34]
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Posted: 10/10/2023 7:49:15 PM EST
[#35]
Quote HistoryOriginally Posted By oldcatawba: https://www.ar15.com/media/mediaFiles/252051/IMG_0391_jpeg-2985490.JPG I like where this is going 
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Posted: 10/14/2023 6:47:45 AM EST
[#36]
Quote HistoryOriginally Posted By HipSh0T: I like where this is going |
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Posted: 10/15/2023 2:35:51 PM EST
[#37]
Hi,
I have a ban era Bushmaster Dissapator w/carbine length gas system. Light round count, never any issues but never run hard. Unattended, what are the likely issues should we begin to run it harder? Is everyone doing preventative maintainence or simply modding? Thanks Mike |
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Posted: 10/15/2023 2:59:28 PM EST
[#38]
Quote HistoryOriginally Posted By xdmikey: Hi, I have a ban era Bushmaster Dissapator w/carbine length gas system. Light round count, never any issues but never run hard. Unattended, what are the likely issues should we begin to run it harder? Is everyone doing preventative maintainence or simply modding? Thanks Mike As long as it's built with quality parts, nothing should go wrong. |
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Posted: 10/15/2023 4:39:13 PM EST
[#39]
Quote HistoryOriginally Posted By xdmikey: Hi, I have a ban era Bushmaster Dissapator w/carbine length gas system. Light round count, never any issues but never run hard. Unattended, what are the likely issues should we begin to run it harder? Is everyone doing preventative maintainence or simply modding? Thanks Mike I've had a few of these,one was ran pretty hard, not well kept, (truck gun), only thing I ever did was clean and lube it once in a while and it was perfect. |
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USA
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Posted: 10/20/2023 1:56:57 PM EST
[#40]
Here's mine with a SA Piston Kit. Just need a retaining cap and figure out which MD to put on. Then, a fresh coat of rattle can PNW pattern style.
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Posted: 10/20/2023 5:01:16 PM EST
[#41]
Quote HistoryOriginally Posted By NWHmoob: Here's mine with a SA Piston Kit. Just need a retaining cap and figure out which MD to put on. Then, a fresh coat of rattle can PNW pattern style. https://i.imgur.com/FQSaEsZ.jpg What all is on the label on the magwell there? |
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Posted: 10/20/2023 7:17:14 PM EST
[#42]
I couldn't decide if I want a dissipator that was more retro or modern. So I followed ARF rules a got both.
 Attached File |
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Posted: 10/20/2023 8:12:07 PM EST
[#43]
Quote HistoryOriginally Posted By MallNinja531: I couldn't decide if I want a dissipator that was more retro or modern. So I followed ARF rules a got both. https://www.ar15.com/media/mediaFiles/505993/IMG_20231020_201339124_jpg-2998642.JPG  Attached File |
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Posted: 10/30/2023 4:03:06 PM EST
[#44]
Should a dissipator go on a m16a4 or m4a1 lower?
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Posted: 10/31/2023 6:09:20 AM EST
[#45]
Quote HistoryOriginally Posted By 03RN: Should a dissipator go on a m16a4 or m4a1 lower? Doesn't really matter but depends if you plan on going fixed stock... If you are then go with the A4, if you plan on an adjustable stock go with the M4. |
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Posted: 10/31/2023 8:19:15 AM EST
[#46]
Quote HistoryOriginally Posted By HipSh0T: Doesn't really matter but depends if you plan on going fixed stock... If you are then go with the A4, if you plan on an adjustable stock go with the M4. Quote HistoryOriginally Posted By HipSh0T: Originally Posted By 03RN: Should a dissipator go on a m16a4 or m4a1 lower? Doesn't really matter but depends if you plan on going fixed stock... If you are then go with the A4, if you plan on an adjustable stock go with the M4. Neither is correct, but I agree with this. |
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Posted: 10/31/2023 10:52:36 AM EST
[#47]
Quote HistoryOriginally Posted By Sputnik556: Neither is correct, but I agree with this. Quote HistoryOriginally Posted By Sputnik556: Originally Posted By HipSh0T: Originally Posted By 03RN: Should a dissipator go on a m16a4 or m4a1 lower? Doesn't really matter but depends if you plan on going fixed stock... If you are then go with the A4, if you plan on an adjustable stock go with the M4. Neither is correct, but I agree with this. Yeah, I'll probably have to do both 
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Posted: 11/2/2023 10:09:04 PM EST
[Last Edit: Minuteman1636]
[#48]
Here is a couple of photos of a Colt prototype 'Dissipator' upper receiver recently received into my collection. It was evaluated for production feasibility as part of the 6940-series of firearms. Note the use of the extra length of rail section to make it rifle length.
 Attached File Attached FileNote the unusual barrel profile as well. Clean-up of the upper receiver assembly is in progress.  Attached File |
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Posted: 11/2/2023 10:14:13 PM EST
[Last Edit: mcculver5]
[#49]
Quote HistoryOriginally Posted By Minuteman1636: Here is a couple of photos of a Colt prototype 'Dissipator' upper receiver recently received into my collection. It was evaluated for production feasibility as part of the 6940-series of firearms. Note the use of the extra length of rail section to make it rifle length. https://www.ar15.com/media/mediaFiles/336740/20231027_201946_jpg-3013947.JPG https://www.ar15.com/media/mediaFiles/336740/20231027_201815_jpg-3013948.JPG Note the unusual barrel profile as well. Clean-up of the upper receiver assembly is in progress. https://www.ar15.com/media/mediaFiles/336740/FB_IMG_1698981106686_jpg-3013962.JPG That's really interesting and a sexy beast. Thanks for the photos. ETA: looks heavy. |
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Posted: 11/2/2023 10:53:57 PM EST
[#50]
Quote HistoryOriginally Posted By mcculver5: That's really interesting and a sexy beast. Thanks for the photos. ETA: looks heavy. Quote HistoryOriginally Posted By mcculver5: Originally Posted By Minuteman1636: Here is a couple of photos of a Colt prototype 'Dissipator' upper receiver recently received into my collection. It was evaluated for production feasibility as part of the 6940-series of firearms. Note the use of the extra length of rail section to make it rifle length. https://www.ar15.com/media/mediaFiles/336740/20231027_201946_jpg-3013947.JPG https://www.ar15.com/media/mediaFiles/336740/20231027_201815_jpg-3013948.JPG Note the unusual barrel profile as well. Clean-up of the upper receiver assembly is in progress. https://www.ar15.com/media/mediaFiles/336740/FB_IMG_1698981106686_jpg-3013962.JPG That's really interesting and a sexy beast. Thanks for the photos. ETA: looks heavy. Very cool. That's kind of what I had in mind when I built my "What if..." PIP 605. I do think my gov-profile barrel is probably more practical then the monster on that Colt upper. Nice addition to a collection, that's for sure. |
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