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Posted: 6/14/2022 10:07:44 AM EDT
[#1]
Quote HistoryOriginally Posted By HipSh0T: Dissipaters look so good with a M5 RAS, I just wish they were more available. Seems like they suddenly dried up and doubled in price overnight, more so than the M4 RAS. Speak of the devil, I put this together last night. Not sure if it’ll stay this way, but just wanted to try it out.  Attached File |
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Posted: 6/14/2022 10:27:02 AM EDT
[Last Edit: Sputnik556]
[#2]
Quote HistoryOriginally Posted By HipSh0T: Dissipaters look so good with a M5 RAS, I just wish they were more available. Seems like they suddenly dried up and doubled in price overnight, more so than the M4 RAS. We’ll that’s unfortunate, I have all of the parts to build an M16A4 aside from the RAS and was debating on wether or not to buy one. Guess that settles it. |
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Posted: 6/17/2022 10:01:39 AM EDT
[Last Edit: isullivan]
[#3]
Quote HistoryOriginally Posted By Sputnik556: We’ll that’s unfortunate, I have all of the parts to build an M16A4 aside from the RAD and was debating on wether or not to buy one. Guess that settles it. With the prices of the M5’s, I’d keep and eye out for a DD Omega 12.0.  Attached File |
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Posted: 7/9/2022 6:29:57 PM EDT
[#4]
There is a cheap PSA Dissipator on Gunbroker right now if anyone is looking. Not mine and no connection to the seller.
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Posted: 7/25/2022 2:19:36 AM EDT
[#5]
I picked up a KE one-piece lower on Friday. After swapping things around, I decided to keep things simple and put my Spike's Tactical mid-length Dissipator upper on it, along with a pair of ribbed A2 handguards. It's light and handy.
I am going to miss my rifle buffer tube and Larue trigger in my original lower, which is now wearing the 20" A2 upper.  Attached File Attached File Attached File Attached FileBest, JBR |
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GA, USA
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Posted: 7/25/2022 4:01:47 AM EDT
[#6]
Quote HistoryOriginally Posted By Air_Soft_Contractor: The Dissipator became popular after the introduction of the early M855 ammo. The original A1 carbines weren't as reliable as the full length A1 rifle with M193 ammo, but they were considered reliable enough. When the A2 carbine came out, M855 ammo wasn't in full production and not much changed. When M855 ammo came out, it used the same powder as M193 ammo and combined with the heavier bullet, wasn't as reliable in the A2 carbines as M193 ammo, but worked acceptably in the full length A2 rifles. Colt then came up with several modifications to the carbine to get it more reliable with M855 ammo and got the Army to call it the M4. The M4 mods were patented by Colt and the aftermarket was flush with standard carbine components, such as feed ramps, carbine buffers and extractor springs. In an effort to come out cheap and reliable with what they had, the Dissipator started being sold with a full length gas system. This was tuned for and worked well with M855 ammo, but lighter bullet ammo struggled to cycle the action. M855 ammo really overpowered 16" barrel carbines. Then Bushmaster came up with moving the gas port on a 16" barrel a similar amount as the difference between a 14.5" barrel and a 16" barrel in length. This solved the overgas problem with M855 ammo in a 16" barrel and allowed using lighter weight bullets. The Colt M4 has feed ramp mods, chamber mods, extractor spring mods, buffer weight mods and the gas port size was changed from the A2 carbines. Later the powder was changed to a cooler burning powder in M855 ammo, but the newer powder reduced the muzzle velocity in an M4, even though it produced the desired velocity from a 20" test barrel. Instead of improving the NATO spec M855 again, money was spent developing, non-NATO standard M855A1 ammo and powder, optimized for the M4 barrel length. M855A1 ammo produces higher gas port pressure, so the buffer weight was increased again to the H2 buffer. Please tell us more New Guy. You are a wealth of information that somehow escaped us for the last 20, 25, 30 years. |
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Posted: 7/25/2022 8:38:46 AM EDT
[#7]
Quote HistoryOriginally Posted By Hellion-Productions: I picked up a KE one-piece lower on Friday. After swapping things around, I decided to keep things simple and put my Spike's Tactical mid-length Dissipator upper on it, along with a pair of ribbed A2 handguards. It's light and handy. I am going to miss my rifle buffer tube and Larue trigger in my original lower, which is now wearing the 20" A2 upper. https://www.ar15.com/media/mediaFiles/75898/20220724_094340_jpg-2464850.JPG https://www.ar15.com/media/mediaFiles/75898/20220724_094333_jpg-2464851.JPG https://www.ar15.com/media/mediaFiles/75898/20220724_094318_jpg-2464852.JPG https://www.ar15.com/media/mediaFiles/75898/20220724_094301_jpg-2464853.JPG Best, JBR Nice 
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Posted: 8/7/2022 11:18:48 AM EDT
[#8]
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AZ, USA
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Posted: 8/8/2022 9:42:38 AM EDT
[#9]
Who makes a decent carry handle upper that's not going to charge a premium for clone/period correctness?
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Posted: 8/8/2022 10:14:39 AM EDT
[#10]
Quote HistoryOriginally Posted By TobyLazur: Who makes a decent carry handle upper that's not going to charge a premium for clone/period correctness? https://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_ID=1321 People are buying these uppers with good results, it says indefinite backorder but people have been getting them within 2 weeks. |
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OR, USA
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Posted: 8/31/2022 8:54:16 PM EDT
[#11]
Del Ton Dissy upper is on the way! Definitely tracking down an M5 RAS.
Thinking SOPMOD and an Aimpoint PRO, not sure on a flip up rear sight yet. I know it's not a precision rifle and I've got other FSP rifles but this will be the only non free float. Any reason to grab a service rifle free float sleeve to put under the M5? Other than because 'free float all the things'? I know it's not needed for a irons/red dot gun but just curious. |
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Posted: 8/31/2022 8:56:03 PM EDT
[#12]
Nah, if you aren't cranking hard on the sling using it as a support in a shooting position you'll be fine.
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OR, USA
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Posted: 8/31/2022 9:17:50 PM EDT
[#13]
That's what I figured. Lots o non FF rifles have gone to war and done just fine.
I like the shooting, I hate waiting for parts. It's the part of BRD that's the hardest. You've decided on what you're assembling, now the wait begins. At least in the mean time SA is going to drop a new pistol which should eat into my optic $$$. |
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Posted: 8/31/2022 9:22:51 PM EDT
[Last Edit: DoorKicker]
[#14]
My three Dissipators
 Attached FileThe two hard stock Dissipators are on Bushmaster lowers "Made in Bama" ones that I just had to buy when I found them. The one on the right, I tried to use as many NON mil-spec parts as possible, and the one on the left is mostly plain jane mil-spec type stuff...They were fun to assemble, taught my daughter while building them. |
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KY, USA
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Posted: 8/31/2022 10:25:58 PM EDT
[Last Edit: Dragoon_89]
[#15]
 Painted the BRN 605 upper / Spikes lower dissy |
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Posted: 9/2/2022 10:58:38 AM EDT
[#16]
  Put together a North Hollywood ‘‘inspired’’ build. - A2 upper - Spinta Precision 16” dissipator barrel - Expo Arms chrome bcg - Rearden RPB brake - Centurion “Battle Axe” lower - SOLGW lpk - Schmid single stage trigger - Radian Talon ambi safety - Colt buffer tube / end plate / castle nut / spring / H buffer (also tested with Sprinco blue spring) - Brownells handguards - B5 CAR stock Put 120 rounds of the weakest ammo I have (PMC bronze .223) through it with 0 malfunctions. With a standard Colt spring and H buffer I got a neat little pile of brass at 3 o’clock. With a Sprinco blue spring and H buffer the pile moved to about 4 o’clock. Recoil is no more than my .22LR upper. It’s a very smooth shooter. Next time I’ll bring better quality ammo and try to get some groups. As it stands though, I’m 100% satisfied with this setup. |
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Posted: 9/7/2022 8:34:50 PM EDT
[#17]
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Posted: 9/16/2022 9:01:23 PM EDT
[#18]
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Posted: 9/23/2022 11:48:28 AM EDT
[#19]
This is in final form. It's handy and the red dot and light make it fairly useful.
I do detest the holosun logo. The LMT logo on the rear sight is understated, then there's the big holosun logo. Ugh. Good red dot though. 
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Posted: 9/23/2022 12:19:09 PM EDT
[Last Edit: packinheavy]
[#20]
Just Sharpie the logo.
 I'm about to build another one myself. |
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USA
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Posted: 9/23/2022 6:46:49 PM EDT
[#21]
Quote HistoryOriginally Posted By mcculver5: This is in final form. It's handy and the red dot and light make it fairly useful. I do detest the holosun logo. The LMT logo on the rear sight is understated, then there's the big holosun logo. Ugh. Good red dot though. https://www.ar15.com/media/mediaFiles/60042/20220923_093703-2536276.jpg That looks great, really dig those SureFire handguards.  A strip of electrical tape will cleanly cover that Holosun logo. |
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Posted: 9/23/2022 7:35:31 PM EDT
[#22]
Aervoe/Krylon/Rustoleum works wonders as well.
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Posted: 9/23/2022 10:57:28 PM EDT
[#23]
Thanks everyone. I too love those old surefire handguards. Seemed like you owned the night with them in the old days,
I have some black camo spray paint and plenty of tape. That's the way I'll go. Now I'm waiting for the barrel assembly to finish a late model 723 build. |
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Posted: 9/24/2022 10:34:49 PM EDT
[#24]
I've Googled till I'm blue in the face. Is there anywhere the CMMG dissipator bayonet is still available? Are they even made anymore?
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USA
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Posted: 9/25/2022 1:29:37 AM EDT
[Last Edit: Ed_Victory]
[#25]
Quote HistoryOriginally Posted By Spedmaster: I've Googled till I'm blue in the face. Is there anywhere the CMMG dissipator bayonet is still available? Are they even made anymore?   I didn’t even know that existed. Thought about buying a Geissele Super Stabby mount back when I had a M5 RAS installed. 
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Posted: 9/25/2022 2:29:31 PM EDT
[Last Edit: HOSS72198]
[#26]
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Posted: 9/25/2022 8:49:31 PM EDT
[#27]
Quote HistoryOriginally Posted By HOSS72198: North Hollywood dissipator. https://www.ar15.com/media/mediaFiles/146317/5346705_jpg-2538979.JPGhttps://www.ar15.com/media/mediaFiles/146317/20220808_195812_jpg-2538973.JPG Kind of a weird tribute rifle, but cool I guess? Looks good. Need a CAR stock. |
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Posted: 9/25/2022 11:07:06 PM EDT
[#28]
Quote HistoryOriginally Posted By mcculver5: Kind of a weird tribute rifle, but cool I guess? Looks good. Need a CAR stock. |
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NH, USA
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Posted: 9/25/2022 11:33:53 PM EDT
[#29]
Quote HistoryOriginally Posted By HOSS72198: Ha, just something different. CAR stock will be added! Quote HistoryOriginally Posted By HOSS72198: Originally Posted By mcculver5: Kind of a weird tribute rifle, but cool I guess? Looks good. Need a CAR stock. I like it! 😎👍 |
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TX, USA
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Posted: 10/16/2022 10:03:33 PM EDT
[#30]
Quote HistoryOriginally Posted By mcculver5: This is in final form. It's handy and the red dot and light make it fairly useful. I do detest the holosun logo. The LMT logo on the rear sight is understated, then there's the big holosun logo. Ugh. Good red dot though. https://www.ar15.com/media/mediaFiles/60042/20220923_093703-2536276.jpg Birchwood Casey Aluminum Black is a quick, easy way to make gaudy logos more subtle. I’ve used it on some rails and red dots with great success. |
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Posted: 10/18/2022 8:49:15 PM EDT
[#31]
Are those SF HG worth anything?
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Posted: 10/18/2022 9:22:34 PM EDT
[#32]
I forgot to post this a while back. This is one of the Spinta barrels that was on sale some time ago after a trip to ADCO to have an F marked FSB installed.
I'll use it with a rifle length buffer system to build a soft shooting toy.  Attached File |
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WV, USA
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Posted: 10/19/2022 1:23:24 AM EDT
[#33]
Quote HistoryOriginally Posted By mcculver5: This is in final form. It's handy and the red dot and light make it fairly useful. I do detest the holosun logo. The LMT logo on the rear sight is understated, then there's the big holosun logo. Ugh. Good red dot though. https://www.ar15.com/media/mediaFiles/60042/20220923_093703-2536276.jpg Man those handguards are the coolest. Wish they were still in production |
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Posted: 10/19/2022 11:33:43 AM EDT
[#34]
How a 12.5” BCM w/9.3” handguard…?
The barrel started as a mid-length 14.5”, chopped to 12.5”, and nothing was done to gas port. Geissele spring and H3 buffer: Unsuppressed ejects at 3 o’clock, suppressed ejects at 1 o’clock. 
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Posted: 10/19/2022 9:41:18 PM EDT
[#35]
Quote HistoryOriginally Posted By Goody454: How a 12.5” BCM w/9.3” handguard…? The barrel started as a mid-length 14.5”, chopped to 12.5”, and nothing was done to gas port. Geissele spring and H3 buffer: Unsuppressed ejects at 3 o’clock, suppressed ejects at 1 o’clock. https://i.ibb.co/2c4WzYJ/C8-EA98-F0-2-B8-D-4-E71-9-F38-749625-D539-FE.jpg Minipator? Cool rifle. |
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Posted: 10/19/2022 9:52:34 PM EDT
[#36]
Quote HistoryOriginally Posted By mcculver5: Minipator? Cool rifle. Quote HistoryOriginally Posted By mcculver5: Originally Posted By Goody454: How a 12.5” BCM w/9.3” handguard…? The barrel started as a mid-length 14.5”, chopped to 12.5”, and nothing was done to gas port. Geissele spring and H3 buffer: Unsuppressed ejects at 3 o’clock, suppressed ejects at 1 o’clock. https://i.ibb.co/2c4WzYJ/C8-EA98-F0-2-B8-D-4-E71-9-F38-749625-D539-FE.jpg Minipator? Cool rifle. Kino |
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USA
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Posted: 10/19/2022 9:57:19 PM EDT
[#37]
Quote HistoryOriginally Posted By Fooboy: Are those SF HG worth anything? I’d like to find one for my Dissy at some point. Do you have a set you’d like to offload? @Fooboy |
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Posted: 10/19/2022 10:18:46 PM EDT
[#38]
Quote HistoryOriginally Posted By SecretSquirell: Kino Not a Kino, this is an actual mid-length. Not a carbine/faux mid. |
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MO, USA
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Posted: 10/19/2022 10:35:54 PM EDT
[#39]
Those of you running rifle length systems, are you drilling out the gas port or are they running fine as is? I'm fixing to build a dizzy but can't read 80+ pages, I only read back to 2018ish and nobody mentioned having problems running rifle length gas
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Posted: 10/20/2022 12:55:31 AM EDT
[#40]
Quote HistoryOriginally Posted By Ed_Victory: I'd like to find one for my Dissy at some point. Do you have a set you'd like to offload? @Fooboy |
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Posted: 10/20/2022 7:06:41 AM EDT
[#41]
Quote HistoryOriginally Posted By jos51700: Those of you running rifle length systems, are you drilling out the gas port or are they running fine as is? I'm fixing to build a dizzy but can't read 80+ pages, I only read back to 2018ish and nobody mentioned having problems running rifle length gas Mine doesn't have a lot of rounds on it yet but seems to work best with Lancer magazines. Pmags and aluminum mags give it 3-5 failures to feed per mag. |
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Posted: 10/20/2022 8:24:03 AM EDT
[#42]
Quote HistoryOriginally Posted By AK-12: Pmags and aluminum mags give it 3-5 failures to feed per mag. Do you think they are riding against the carrier enough to short stroke? |
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Posted: 10/20/2022 9:01:57 AM EDT
[#43]
Quote HistoryOriginally Posted By HighpowerRifleBrony: Do you think they are riding against the carrier enough to short stroke? I haven't had enough time to really dig into it too far but I suspect that's what's happening. I think it'll be fine once it wears in a bit. |
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Posted: 10/20/2022 2:36:24 PM EDT
[#44]
Quote HistoryOriginally Posted By Goody454: Not a Kino, this is an actual mid-length. Not a carbine/faux mid. Quote HistoryOriginally Posted By Goody454: Originally Posted By SecretSquirell: Kino Not a Kino, this is an actual mid-length. Not a carbine/faux mid. Close 'nuff. |
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TX, USA
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Posted: 10/21/2022 1:15:17 PM EDT
[#45]
There’s a facebook group going for dissys now if you all wanna join up and share your builds and info.
https://www.facebook.com/groups/499291758781863/?ref=share_group_link |
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NH, USA
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Posted: 11/23/2022 9:04:44 AM EDT
[#46]
Quote HistoryOriginally Posted By tdsmart: There’s a facebook group going for dissys now if you all wanna join up and share your builds and info. https://www.facebook.com/groups/499291758781863/?ref=share_group_link Bump |
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Posted: 12/31/2022 8:17:07 PM EDT
[#47]
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TX, USA
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Posted: 12/31/2022 9:32:53 PM EDT
[#48]
I really like that!
Quote HistoryOriginally Posted By --FLEET--: Might be a reach to qualify as a dissy, but it’s a double gas block 16 incher https://i.imgur.com/98X4YAe.jpg |
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Posted: 1/1/2023 3:26:51 AM EDT
[#49]
Quote HistoryOriginally Posted By mcculver5: This is in final form. It's handy and the red dot and light make it fairly useful. I do detest the holosun logo. The LMT logo on the rear sight is understated, then there's the big holosun logo. Ugh. Good red dot though. https://www.ar15.com/media/mediaFiles/60042/20220923_093703-2536276.jpg @mcculver5 LED upgrade in your Surefire forend? If so, which one did you go with? |
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Posted: 1/1/2023 10:52:23 AM EDT
[Last Edit: mcculver5]
[#50]
Quote HistoryOriginally Posted By NWRed: @mcculver5 LED upgrade in your Surefire forend? If so, which one did you go with? @NWRed Nope. Just stock. Fine for its intended use...being awesome! And owning the night 90s and 00s style. Honestly, 60-100 lumens still feels pretty bright to me indoors. I have a soft spot for the old surefire handguards. 
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