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TN, USA
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Posted: 6/3/2019 11:11:48 AM EDT
[#1]
Random question for the original Spikes GMP Dissipator owners. How did they attach the front handguard cap to the FSB?
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Posted: 6/3/2019 3:28:19 PM EDT
[#2]
Quote HistoryOriginally Posted By JF12:
Random question for the original Spikes GMP Dissipator owners. How did they attach the front handguard cap to the FSB? |
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Posted: 6/3/2019 8:10:48 PM EDT
[#3]
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Posted: 6/3/2019 9:19:37 PM EDT
[#4]
Quote HistoryOriginally Posted By mike_nds:
Mine has a socket head screw. Quote HistoryOriginally Posted By mike_nds:
Originally Posted By JF12:
Random question for the original Spikes GMP Dissipator owners. How did they attach the front handguard cap to the FSB? |
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TN, USA
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Posted: 6/4/2019 2:44:31 PM EDT
[#5]
Quote HistoryOriginally Posted By mike_nds: Mine has a socket head screw. Quote HistoryOriginally Posted By mike_nds: Mine has a socket head screw. Originally Posted By SecretSquirell:
Same. 1/4-20 IIRC |
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VA, USA
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Posted: 6/5/2019 7:03:31 AM EDT
[#6]
My humble submission. PSA 300blk Dissy barrel, Aero M4E1 Enhanced upper and 12" Quantum rail, Aero M4E1 lower, MBT Trigger. I am pretty happy with the way it turned out. Sorry for the low quality pic.
https://flic.kr/p/2g1QJFH |
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CA, USA
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Posted: 6/10/2019 4:30:53 PM EDT
[#7]
Here’s my contribution
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MN, USA
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Posted: 6/15/2019 4:03:23 PM EDT
[#8]
psa has chf dissipator uppers in stock. fyi
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USA
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Posted: 6/15/2019 5:48:02 PM EDT
[Last Edit: Ed_Victory]
[#9]
Quote HistoryOriginally Posted By hamdizle:
psa has chf dissipator uppers in stock. fyi Not sure why they don’t use a roll pin vs. that massive screw in the first place. |
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CA, USA
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Posted: 6/16/2019 3:02:56 PM EDT
[#10]
AIM/Spikes GMP upper on a BCM lower. Cav Arms A1 stock, Umbrella Corp/B5 grip, and RAS M5 up front. H1 sight and a cut down carry handle rear. Linear comp on the front end and a Proctor sling. The RAS is a bit chunky, but the barrel profile helps. Weighs in at 9.4lbs with a loaded 30 round mag.
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IRL
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Posted: 6/16/2019 3:25:38 PM EDT
[#11]
Quote HistoryOriginally Posted By Ed_Victory: I’m about to buy one of their nitride mid-lengths, anyone know what size roll pin I’ll need to unfuck their endcap-FSB mounting? I’ll be installing a KAC RAS. Not sure why they don’t use a roll pin vs. that massive screw in the first place. I used to use a roll pin, I just measured it and I think I had to drill the holes out just a little to fit a standard size roll pin. Now I just use a cut off gas tube. Honestly you probably don't even need anything. The RAS is attached to the barrel nut for anti-rotation and the cap really isn't going anywhere with the handguard on. It's pretty dumb using a screw. They should have just used a stub of a gas tube. |
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USA
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Posted: 6/16/2019 3:55:09 PM EDT
[#12]
Quote HistoryOriginally Posted By mrbieler:
AIM/Spikes GMP upper on a BCM lower. Cav Arms A1 stock, Umbrella Corp/B5 grip, and RAS M5 up front. H1 sight and a cut down carry handle rear. Linear comp on the front end and a Proctor sling. The RAS is a bit chunky, but the barrel profile helps. Weighs in at 9.4lbs with a loaded 30 round mag. https://i.imgur.com/M2ojYi6h.jpg |
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Posted: 6/17/2019 7:34:48 AM EDT
[Last Edit: spin180]
[#13]
Quote HistoryOriginally Posted By Ed_Victory:
I’m about to buy one of their nitride mid-lengths, anyone know what size roll pin I’ll need to unfuck their endcap-FSB mounting? I’ll be installing a KAC RAS. Not sure why they don’t use a roll pin vs. that massive screw in the first place. Quote HistoryOriginally Posted By Ed_Victory:
I’m about to buy one of their nitride mid-lengths, anyone know what size roll pin I’ll need to unfuck their endcap-FSB mounting? I’ll be installing a KAC RAS. Not sure why they don’t use a roll pin vs. that massive screw in the first place. Originally Posted By AASG:
Keep in mind that they have threaded the hole, so a roll pin or gas tube probably won't fit now. I used to use a roll pin, I just measured it and I think I had to drill the holes out just a little to fit a standard size roll pin. Now I just use a cut off gas tube. Honestly you probably don't even need anything. The RAS is attached to the barrel nut for anti-rotation and the cap really isn't going anywhere with the handguard on. It's pretty dumb using a screw. They should have just used a stub of a gas tube.  Attached File |
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Posted: 6/17/2019 7:40:23 AM EDT
[#14]
Quote HistoryOriginally Posted By mrbieler:
AIM/Spikes GMP upper on a BCM lower. Cav Arms A1 stock, Umbrella Corp/B5 grip, and RAS M5 up front. H1 sight and a cut down carry handle rear. Linear comp on the front end and a Proctor sling. The RAS is a bit chunky, but the barrel profile helps. Weighs in at 9.4lbs with a loaded 30 round mag. https://i.imgur.com/M2ojYi6h.jpg 
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Posted: 6/17/2019 8:10:19 AM EDT
[#15]
Quote HistoryOriginally Posted By Veprz: Dang, I wish Spikes still made the GMP upper. |
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USA
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Posted: 6/17/2019 4:06:02 PM EDT
[Last Edit: Ed_Victory]
[#16]
Quote HistoryOriginally Posted By spinr:
The RAS fits fine on my CHF upper. Does the nitride upper use a different screw? https://www.AR15.Com/media/mediaFiles/121158/20190617_070715_jpg-982442.JPG Guess I’ll update when my upper arrives. 
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Posted: 6/17/2019 10:30:06 PM EDT
[#17]
Originally Posted By Ed_Victory:
Is that a late or early RAS? I have an early Vero RAS with the flatter spring tab, maybe it’ll slide in without modification. Guess I’ll update when my upper arrives. I'm not sure you'll have to modify anything, but if you do it might be easiest to grind a little material off of the screw. |
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Posted: 6/21/2019 1:34:40 PM EDT
[#18]
I guess i can put this here. This is from Brownells and does have rifle length gas system
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IRL
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Posted: 6/23/2019 3:05:22 PM EDT
[#19]
Has anybody used these foxtrot Mike barrels?
https://www.opticsplanet.com/fm-products-premium-41v50-5-56-ar-barrel.html?_iv_code=3JR-BRI-P556AB-FM-556-16BRL Wondering if the gas block journal is long enough for a FSB? |
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TN, USA
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Posted: 6/27/2019 7:53:16 PM EDT
[#20]
Quote HistoryOriginally Posted By balloo93:
Here's one on the EE right now 12 Omega The price is a little high, but it's a great rail https://i.imgur.com/lhh3qco.jpg?1 Quote HistoryOriginally Posted By balloo93:
Originally Posted By JF12:
Looks good! I need to track me down one of those DD Omegas at some point. https://i.imgur.com/lhh3qco.jpg?1 |
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Posted: 6/28/2019 3:02:23 AM EDT
[#21]
Quote HistoryOriginally Posted By JF12: Random question. What comp/FH are you using. I dig it. |
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Posted: 6/28/2019 4:55:31 AM EDT
[#22]
Quote HistoryOriginally Posted By Johhnyrotten:
I guess i can put this here. This is from Brownells and does have rifle length gas system https://www.AR15.Com/media/mediaFiles/496960/IMG_1333-987781.jpg |
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CA, USA
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Posted: 6/28/2019 8:13:21 PM EDT
[#23]
Quote HistoryOriginally Posted By Johhnyrotten:
I guess i can put this here. This is from Brownells and does have rifle length gas system https://www.AR15.Com/media/mediaFiles/496960/IMG_1333-987781.jpg |
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TN, USA
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Posted: 7/8/2019 10:13:56 AM EDT
[#24]
Quote HistoryOriginally Posted By balloo93: Spike's tactical Dynacomp. |
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Posted: 7/14/2019 9:11:30 PM EDT
[#25]
Finally complete I think, Cav A1 stock arrived last week, hit the range a few days and love shooting this thing!
 Attached File |
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VA, USA
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Posted: 7/15/2019 6:18:00 AM EDT
[#26]
Quote HistoryOriginally Posted By AASG:
Has anybody used these foxtrot Mike barrels? https://www.opticsplanet.com/fm-products-premium-41v50-5-56-ar-barrel.html?_iv_code=3JR-BRI-P556AB-FM-556-16BRL Wondering if the gas block journal is long enough for a FSB? |
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Posted: 7/15/2019 12:43:28 PM EDT
[#27]
FOXTROT MIKE PRODUCTS wrote:
Yes that will work. Hi- Is the journal on the 16" rifle gas long enough to install a forged FSB? |
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Posted: 7/15/2019 1:38:29 PM EDT
[#28]
Quote HistoryOriginally Posted By patswin3:
Finally complete I think, Cav A1 stock arrived last week, hit the range a few days and love shooting this thing! https://www.AR15.Com/media/mediaFiles/82995/18B7D43C-2092-43B7-8D18-E5D61E000921_jpeg-1016640.JPG |
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USA
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Posted: 7/15/2019 6:27:08 PM EDT
[#29]
Quote HistoryOriginally Posted By patswin3:
Finally complete I think, Cav A1 stock arrived last week, hit the range a few days and love shooting this thing! https://www.AR15.Com/media/mediaFiles/82995/18B7D43C-2092-43B7-8D18-E5D61E000921_jpeg-1016640.JPG |
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Posted: 7/24/2019 9:33:43 PM EDT
[#30]
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Posted: 8/7/2019 11:07:54 PM EDT
[#31]
I think I forgot to post updated Proto-dissy with new A1 length stock.
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CA, USA
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Posted: 8/8/2019 1:58:02 PM EDT
[#32]
Love my Spikes midlength dissipator, but I always wanted one with an A1 upper. Couldn't get the guts to put the spike barrel assembly on a new upper so I decided to build a new one. Aero lower, A1 upper, Brownells 605 15.5" barrel assembly, and a pinned and welded Griffin Arms Linear Comp to make it California featureless when it's all said and done.
Won't have time until the middle of next week to try this out. 
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MI, USA
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Posted: 8/8/2019 3:18:48 PM EDT
[Last Edit: Hojo15]
[#33]
I started with a PSA mock Dissipator because I like the mid length gas system. I decided to give it a modern/retro look, I call it my 605A4gery.
-Upper: PSA 16" 5.56 NATO 1/7 Dissipator, 4150v, Mid Length"-Lower: Ruger AR556 -LPK: Tatical Superiority -FCG: PSA Mil-spec, round hammer -BCG: PSA, Prem, F/A, w/O-ring, Logo -C/H: PSA Prem., 7075-T6 -Grip: BCM Gunfighter mod 3 -Handguard: Brownells A1 triangle -Stock: Cavalry mfg C1, rifle tube, spring & buffer -Carry Handle: Colt, Mil-Spec, F marked FSB -Muzzle Device: 3 Prong (Fulton Armoury) -Sling: 1954 MRT M1 ODG |
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Posted: 8/24/2019 12:02:48 AM EDT
[#34]
I finally got my dissipator with the rifle-gas Spinta Precision barrel to the range. It ran quite well and I'm very happy with how it shoots.
 Spinta Precision Dissipator When I was putting it together, I had some concerns about how the .110 diameter gas port would affect the feel of the gun. In doing some reading about cycling issues, recoil impulse, and such, I came across a thread here discussing the merits of flat-wire springs and heavy buffers which led me to install a Tubb flat-wire spring and an H3 buffer. I think that might be the perfect combination for this rifle. It fired and cycled perfectly through approximately 300 rounds. I was able to shoot it alongside a 14.5" carbine, 14.5" mid-length, and a 16" mid-length. As one might expect, there was a noticeable difference compared to the carbine-gas gun. However, I was somewhat surprised in how much difference there was compared to the mid-length guns. It was much more perceptible than I would've figured. There was one thing that gave me a bit of pause, and that was how high it shot. I had to adjust the elevation quite a bit, at least more than I'm used to doing. I suspect that was just the combination of the 1/8" twist and cheap PMC ammo, though. Hopefully I can get back to the range to try some different loads relatively soon. I knew my love for the dissy was strong, but this one has put it on a new level. |
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CA, USA
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Posted: 8/24/2019 6:42:20 AM EDT
[Last Edit: mrbieler]
[#35]
Finally had some range time with this one. I decided the A1 forearm was a little too fat at the bottom in my hands so I went back to the slim tapered A2 hand guards. Three range sessions and a total of 600 rounds, 500 of which were PMC Bronze .223. I was worried how the 0.1015 port on the Brownells upper would handle the light load.
It's definitely softer and slower functioning then my mid-lengths and carbines, but it tosses the PMC at 4:30 into a neat pile at about 6' and chugs away through slow and rapid fire. When I loaded Federal XM193, I was getting the empties coming out at about 3:30 with a little more oomph. A total or 5 misfeeds which I isolated to a bad 10/20 Pmag. Always the 9th round and the mag had the same failure in other rifles. All in all, I'm happy with it and it's fun to shoot. Had my son out clanging steel plates at 100 yards. Put a big grin on his face. 
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Posted: 8/24/2019 9:00:50 AM EDT
[#36]
Quote HistoryOriginally Posted By Johhnyrotten:
I guess i can put this here. This is from Brownells and does have rifle length gas system https://www.AR15.Com/media/mediaFiles/496960/IMG_1333-987781.jpg I have a few like this one that I put together over the years. Most are built with left over retro parts. It looks clean in design and has a good balance. Thanks for posting the picture Ron |
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VA, USA
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Posted: 9/2/2019 6:21:04 PM EDT
[Last Edit: richiecotite]
[#37]
Changed a few things up. Was rocking the fat oval handguards and carry handle sight.
I call this the Chef's Special. https://m.imgur.com/a/zaDcBW3 
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Posted: 9/2/2019 6:41:31 PM EDT
[#38]
Originally Posted By richiecotite:
Changed a few things up. Was rocking the fat oval handguards and carry handle sight. I call this the Chef's Special. https://m.imgur.com/a/zaDcBW3 https://i.imgur.com/eElWtHF_d.jpg?maxwidth=640&shape=thumb&fidelity=medium |
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NE, USA
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Posted: 9/11/2019 6:26:05 PM EDT
[Last Edit: Whiskey11]
[#39]
Hey guys, thought I'd drop in and add my Dissy Photo up! Rifle is a custom "build":
Anderson Lower PSA Dissipator Upper Geissele SSAE Magpul UBR Magpul MOE Grip (Both of them :P) Ground Zero Precision BCG Strike Industries Extended Latch Charging Handle Lantac Dragon Comp KAC M5 RAS UTG National Match Cut Carry Handle Sight (I know... UTG...) SIG Romeo 5 Streamlight ProTac Weapon Light  I think I'm going to end up building another Dissy that is more basic (Read: Lighter Weight) to put in the patrol car. Love the longer sight radius vs a standard 16" barrel AR. Shoots soft, comp isn't overly oppressive to those around and it just runs well! I can't complain about this build at all! |
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Posted: 9/25/2019 9:19:49 PM EDT
[#40]
Quote HistoryOriginally Posted By GHOS7:
Received my PSA upper, TA31, and KAC M5: https://i.imgur.com/5m9eA9U.jpg?1 https://i.imgur.com/GCN48xR.jpg?1 Second photo is just a mock-up with a lower from another rifle. This build still has a ways to go. I need to pick up the Aero M16A4 lower from my FFL and order a few other things; - PRI folding FSB - Matech rear sight - SOPMOD stock - Kill flash for the TA31 - Thinking about doing a LaRue LT681 Is that the regular PSA mid gas dissipator or the CHF one in your picture? Anyone know if all the PSA dissipator uppers are the same barrel contour? Thanks! |
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Posted: 9/25/2019 9:49:40 PM EDT
[#41]
Quote HistoryOriginally Posted By E4W: @GHOS7 Is that the regular PSA mid gas dissipator or the CHF one in your picture? Anyone know if all the PSA dissipator uppers are the same barrel contour? Thanks! |
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Posted: 9/25/2019 10:00:05 PM EDT
[#42]
Thanks!
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Posted: 9/26/2019 9:54:20 PM EDT
[#43]
Quote HistoryOriginally Posted By E4W:
Thanks! |
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Posted: 9/26/2019 10:53:16 PM EDT
[#44]
Quote HistoryOriginally Posted By patswin3:
Finally complete I think, Cav A1 stock arrived last week, hit the range a few days and love shooting this thing! https://www.AR15.Com/media/mediaFiles/82995/18B7D43C-2092-43B7-8D18-E5D61E000921_jpeg-1016640.JPG |
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PA, USA
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Posted: 10/9/2019 1:45:50 PM EDT
[#45]
I was looking for a method to secure the front hg cap to the fsb. Is there a roll pin or any other ideas. Now mine is loose and it's ok with the moe hg but upgrading to the M5 Ras and wanted it to be secured.
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Posted: 10/9/2019 3:50:23 PM EDT
[#46]
Quote HistoryOriginally Posted By speedjunkie:
I was looking for a method to secure the front hg cap to the fsb. Is there a roll pin or any other ideas. Now mine is loose and it's ok with the moe hg but upgrading to the M5 Ras and wanted it to be secured. Either stick a roll pin into the gas tube hole on the FSB, then mushroom it out so it stays put; OR strip all that shit, tap some threads in the gas tube hole on the FSB and screw the HG cap in place. I went with the latter on a different build that needed a HG retainer cap but no gas tube at that location and it works GREAT. But, admittedly, a little bit of work. |
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PA, USA
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Posted: 10/9/2019 11:49:29 PM EDT
[#47]
thanks. I will try the easy road first. See if I have any roll pins lying around.
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Posted: 10/21/2019 12:07:36 AM EDT
[Last Edit: Digger440]
[#48]
Mega Gator lower with MBT, ambi mag catch
PSA 1/8 Wylde stainless mid-length gas upper PSA premium NiB BCG Trijicon front and rear sight inserts Magpul MOE grip and handguards Streamlight Poly Tac SKS or AK green web sling 
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TX, USA
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Posted: 10/29/2019 3:07:08 PM EDT
[Last Edit: ELPerdido]
[#49]
Having waited months for PSA to have the FN CHF chrome lined mid-length dissipator uppers in stock, I finally received the "in stock" email a week ago so I ordered one. Yesterday, the upper arrived. Upper receiver has t-marks, no cant to the sight tower and no visible issues. I assembled the upper to a Spikes lower with a carry handle sight, A2 stock and handguards (all Colt), lubed it up and test fired today. It took 10 shots to zero at 50 yards. Put another 100 rounds of M855 through it. No malfs, no problems. I am impressed.
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Posted: 10/29/2019 4:08:43 PM EDT
[#50]
Quote HistoryOriginally Posted By ELPerdido:
Having waited months for PSA to have the FN CHF chrome lined mid-length dissipator uppers in stock, I finally received the "in stock" email a week ago so I ordered one. Yesterday, the upper arrived. Upper receiver has t-marks, no cant to the sight tower and no visible issues. I assembled the upper to a Spikes lower with a carry handle sight, A2 stock and handguards (all Colt), lubed it up and test fired today. It took 10 shots to zero at 50 yards. Put another 100 rounds of M855 through it. No malfs, no problems. I am impressed. |
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