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Posted: 2/10/2023 7:32:02 PM EST
[#1]
Quote HistoryOriginally Posted By GACS: Beat me to it! This is the real deal assembled for Primary Arms from us. Geissele Automatics Blemula AR-15 Barreled Upper Receiver 5.56 NATO - Black - 12.5" - Closed-Tine -GACS Carbine length gas system...But why!! |
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Posted: 2/10/2023 8:29:18 PM EST
[#2]
@GACS what is the gas port size?
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Posted: 2/12/2023 10:51:57 AM EST
[Last Edit: ScoutH57]
[#3]
Quote HistoryOriginally Posted By voodochild: Carbine length gas system...But why!! If they gassed it as well as they have the others I wouldn’t be too worried about it. My only experience is with BCM 12.5s and a Ballistic advantage one. The BCM is intense with an a5h2 still lol I’m still impressed by the 10.3 and 11.5. |
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TX, USA
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Posted: 2/14/2023 11:54:30 AM EST
[#4]
Quote HistoryOriginally Posted By ScoutH57: If they gassed it as well as they have the others I wouldn’t be too worried about it. My only experience is with BCM 12.5s and a Ballistic advantage one. The BCM is intense with an a5h2 still lol I’m still impressed by the 10.3 and 11.5. Quote HistoryOriginally Posted By ScoutH57: Originally Posted By voodochild: Carbine length gas system...But why!! If they gassed it as well as they have the others I wouldn’t be too worried about it. My only experience is with BCM 12.5s and a Ballistic advantage one. The BCM is intense with an a5h2 still lol I’m still impressed by the 10.3 and 11.5. Even gassed properly, I'd still rather have a 12.5 Mid over a 12.5 Carbine. Hopefully @GACS will help them see the error of their ways and produce a 12.5 midlength barrel. 
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Posted: 2/18/2023 4:01:12 AM EST
[#5]
Was really hoping 12.5" mid Geissele barrels were here
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Posted: 2/18/2023 5:26:10 PM EST
[#6]
I was just hoping for 11.5” Mk8 rails.
I don’t give a fuck about their barrels, but I would buy one if appropriately set up. |
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NC, USA
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Posted: 2/22/2023 9:20:50 PM EST
[#7]
Yup. Carbine vs mid in a 12.5 is irrelevant to me. Gassed well enough to function but not so much that it blasts me with a can on.
I care much more about an 11.5 MK16 on an assembled upper from the factory. |
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Posted: 2/22/2023 9:32:22 PM EST
[#8]
Crud. Not on sale any more.
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LA, USA
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Posted: 2/25/2023 12:53:23 PM EST
[Last Edit: huntsimp87]
[#9]
Quote HistoryOriginally Posted By GACS: Beat me to it! This is the real deal assembled for Primary Arms from us. Geissele Automatics Blemula AR-15 Barreled Upper Receiver 5.56 NATO - Black - 12.5" - Closed-Tine -GACS Gas port diameter? Why closed-tine? |
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Posted: 2/25/2023 3:35:56 PM EST
[#10]
Quote HistoryOriginally Posted By huntsimp87: Gas port diameter? Why closed-tine? Don’t they all come with closed tine pretty much now? |
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Posted: 2/25/2023 5:15:41 PM EST
[Last Edit: 1168RGR]
[#11]
Quote HistoryOriginally Posted By Wake27: Yup. Carbine vs mid in a 12.5 is irrelevant to me. Gassed well enough to function but not so much that it blasts me with a can on. I care much more about an 11.5 MK FIFY, but yeah. |
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Posted: 2/25/2023 9:45:51 PM EST
[Last Edit: -OdieGreen-]
[#12]
Quote HistoryOriginally Posted By 1168RGR: BTW, GACS, I’d assume that y’all’ve done more market research than a couple posts on Arfcom, but, Larue’s 11” rails are probably your most direct competition…. I can’t even remember the last time I saw anyone running a Larue rail. Hell, I can’t even remember the last time I saw anyone running a Larue rail on ArfCom unless it was an old rifle. It’s durable but incredibly outdated. |
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Posted: 2/25/2023 11:06:34 PM EST
[Last Edit: 1168RGR]
[#13]
Quote HistoryOriginally Posted By -OdieGreen-: I can’t even remember the last time I saw anyone running a Larue rail. Hell, I can’t even remember the last time I saw anyone running a Larue rail on ArfCom unless it was an old rifle. It’s durable but incredibly outdated. Apparently we don’t run in the same circles. I don’t find them outdated at all, and I’ve tried or own(ed) most of the rails currently on the market. I’d guess its probably obsolete on social media. Works great for shooting. |
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Posted: 2/26/2023 2:00:22 AM EST
[#14]
Quote HistoryOriginally Posted By 1168RGR: Apparently we don’t run in the same circles. I don’t find them outdated at all, and I’ve tried or own(ed) most of the rails currently on the market. I’d guess its probably obsolete on social media. Works great for shooting. I would literally bet real money that BCM and Geissele sell 100 rails to every 1 that Larue sells. But you’re right. Your are an operator who runs with operators and anyone else is just a social media poser. |
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NC, USA
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Posted: 2/26/2023 10:12:57 AM EST
[Last Edit: Wake27]
[#15]
Quote HistoryOriginally Posted By -OdieGreen-: Your are an operator Quoted for actual truth... also I shot with a retired GB in January that was using a Larue rail. |
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NC, USA
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Posted: 2/26/2023 10:16:53 AM EST
[#16]
Quote HistoryOriginally Posted By 1168RGR: FIFY, but yeah. I'd happily take a MK8 if they made the bottom vent holes MLOK slots. I vastly prefer 7-sided MLOK rails, don't really care about the profile of it. I just never understood the idea of putting vent holes on a rail when MLOK slots are also holes in the rail but can serve a dual purpose. I like the location of the MK16s QD insert too but that's far less of a consideration for me. |
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LA, USA
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Posted: 2/26/2023 6:42:35 PM EST
[Last Edit: huntsimp87]
[#17]
Primary Arms stated that the GP diameter is 0.070".
Retarded. |
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Posted: 2/27/2023 4:02:54 PM EST
[Last Edit: 1168RGR]
[#18]
Quote HistoryOriginally Posted By -OdieGreen-: I would literally bet real money that BCM and Geissele sell 100 rails to every 1 that Larue sells. Quote HistoryOriginally Posted By -OdieGreen-: I would literally bet real money that BCM and Geissele sell 100 rails to every 1 that Larue sells. Your are an operator who runs with operators Originally Posted By Wake27: Quoted for actual truth... also I shot with a retired GB in January that was using a Larue rail. Lol. I don’t think I’m high-speed enough for this thread, though. This is like the third time I’ve been put in my place in this thread by the real killers. I’ll admit, I had the only Larue rail in sight at the SWAT Challenge last week. Don’t think I noticed any G rails, either, though. Originally Posted By Wake27: I'd happily take a MK8 if they made the bottom vent holes MLOK slots. I vastly prefer 7-sided MLOK rails, don't really care about the profile of it. I just never understood the idea of putting vent holes on a rail when MLOK slots are also holes in the rail but can serve a dual purpose. I like the location of the MK16s QD insert too but that's far less of a consideration for me. Ok, that makes sense. |
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Posted: 2/27/2023 6:45:11 PM EST
[Last Edit: -OdieGreen-]
[#19]
Quote HistoryOriginally Posted By 1168RGR: that’s probably true. How does it make Larue, the only company making solid 11” rails, outdated? Just because its not the latest hype? I mean, just a page ago people were asking to resurrect a discontinued rail, when I’d be happy with a Mk8. Lol. I don’t think I’m high-speed enough for this thread, though. This is like the third time I’ve been put in my place in this thread by the real killers. I’ll admit, I had the only Larue rail in sight at the SWAT Challenge last week. Don’t think I noticed any G rails, either, though. Ok, that makes sense. For me it’s the lack mounting options. I also prefer the ease of removal in the event of servicing. Pulling a Geissele or BCM rail is just a bit easier to do. Aside from that I’ll be that guy. I think they look old.  I’ve never shot anyone. With all due respect, that doesn’t mean I have no right to an opinion on what products I use. Larue would sell a lot more rails if they came out with a continuous top rail and 7 sided MLOK. Trivial to some, but I think the market speaks pretty loudly to that. |
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Posted: 2/28/2023 9:18:23 AM EST
[Last Edit: 1168RGR]
[#20]
Quote HistoryOriginally Posted By -OdieGreen-: For me it’s the lack mounting options. I also prefer the ease of removal in the event of servicing. Pulling a Geissele or BCM rail is just a bit easier to do. Aside from that I’ll be that guy. I think they look old. I’ve never shot anyone. With all due respect, that doesn’t mean I have no right to an opinion on what products I use. Larue would sell a lot more rails if they came out with a continuous top rail and 7 sided MLOK. Trivial to some, but I think the market speaks pretty loudly to that. I don’t really understand your first paragraph. They mount anything you need, and the rail comes off and on for servicing as easily or easier than BCM or G. The indexed portion is the barrel nut, which is indeed more tedious to install and remove. Of course its acceptable for you to have an opinion on what you purchase. And G makes very nice stuff (just not in 11.x”). But just because you have other preferences, doesn’t make something obsolete, or non-competitive. Just like my opinion that some products are only outdated on social media, but still are adequate for their intended purpose. Which is a positive opinion, rather than a negative or condescending one. BTW, they almost have what you want. Its only 7-sided at the front, though. Two slots back and the 45s turn into vents, although I’m not sure what I’d want to mount back there. I only brought up Larue to goad G into making a competing product for me to buy, but they chose a different path, so I’ll stick with what I’ve got. I apologize for the thread drift. |
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TX, USA
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Posted: 3/10/2023 10:13:41 AM EST
[#21]
Quote HistoryOriginally Posted By Apec: Interesting, this is the first time I'm hearing of 416 stuff other than rails/triggers. It was a couple years ago, they had posted teaser pics on IG. But I guess they'll be released "after the holidays" |
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VA, USA
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Posted: 3/14/2023 7:22:44 AM EST
[#22]
Quote HistoryOriginally Posted By M4A1SOPMOD: It was a couple years ago, they had posted teaser pics on IG. But I guess they'll be released "after the holidays" Quote HistoryOriginally Posted By M4A1SOPMOD: Originally Posted By Apec: Interesting, this is the first time I'm hearing of 416 stuff other than rails/triggers. It was a couple years ago, they had posted teaser pics on IG. But I guess they'll be released "after the holidays" I’d even be down for a Geissele made 416A5. |
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MI, USA
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Posted: 3/17/2023 9:05:47 PM EST
[Last Edit: JVG636]
[#23]
What’s wrong with it having a .70 gas port ? Same as rosco and solgw right ? Will that not run well ? I picked one up but yet to shoot it . Was hoping this would run well suppressed if not maybe I’ll get rid of it as that was my main idea I run my BCM mk2 11.5 with socom2 and comp m5 I was going to run this 12.5 with the socom mini and a LPV
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Posted: 3/17/2023 9:49:59 PM EST
[Last Edit: 1168RGR]
[#24]
Quote HistoryOriginally Posted By JVG636: What’s wrong with it having a .70 gas port ? Same as rosco and solgw right ? Will that not run well ? A 0.065” will cycle and lock back with any decent ammo unsuppressed on a 12.5”. 0.070” will run a 10.3”. |
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Posted: 3/17/2023 11:45:31 PM EST
[Last Edit: NachoDip]
[#25]
Quote HistoryOriginally Posted By 1168RGR: A 0.065” will cycle and lock back with any decent ammo unsuppressed on a 12.5”. 0.070” will run a 10.3”. Drill it out to .125 and get the ultimate in reliability. It’ll run on a mouse fart. |
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NC, USA
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Posted: 4/7/2023 5:15:42 AM EST
[#26]
This still needs to happen.
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Posted: 4/7/2023 11:45:19 AM EST
[#27]
Quote HistoryOriginally Posted By Wake27: This still needs to happen. Thanks for reminding me to unsubscribe from this thread. |
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Posted: 5/26/2023 9:04:14 AM EST
[#28]
Sooo did anyone buy one of these and shoot it?
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Posted: 5/26/2023 3:16:45 PM EST
[#29]
I did but have not been to the range yet. Hopefully next week.
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Posted: 5/26/2023 6:09:05 PM EST
[Last Edit: ScoutH57]
[#30]
Quote HistoryOriginally Posted By cigardad: I did but have not been to the range yet. Hopefully next week. Cool, let us know. I had an abusive relationship with a BCM 12.5”. Want to know how the Geissele barrel does |
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Posted: 6/6/2023 2:15:01 PM EST
[Last Edit: Dee_NY]
[#31]
Wake27
2011 361 100% (12) CO, USA Posted: 6/2/2022 10:28:38 PM EDT Anything other than a fully extended rail would be heresey. Everyone makes 9.5, 10.5, and 13.5 rails. Nowhere near enough companies make 11.5 rails and even fewer make complete 12.5 uppers with 11.5-11.75 rails. A 12.5 Super Duty would kill, but it needs to have a fully extended MK16 like every other upper. Back it off from the muzzle just enough to suppress and enjoy that corner of the market. This is the way. |
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Posted: 7/17/2023 4:36:59 PM EST
[Last Edit: bulletboy5150]
[#32]
Picked up a blem 12.5 barrel and 13.5 mk16 to chop. Before I go chopping the mk16 does G have any plans to make an 11.5" mk16 rail? I would buy one in an instant
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Posted: 7/17/2023 5:45:14 PM EST
[#33]
Quote HistoryOriginally Posted By bulletboy5150: Picked up a blem 12.5 barrel and 13.5 mk16 to chop. Before I go chopping the mk16 does G have any plans to make an 11.5" mk16 rail? I would buy one in an instant I'm curious to see how the shoulder of the barrel lines up with my already chopped rail. I had to shave mine after my initial chop for my Criterion and Griffin plan A. Then I switched to YHM sRx and wish I hadn't shaved it. |
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Posted: 7/17/2023 10:39:41 PM EST
[#34]
The Geissele 12.5 is a hair longer than the Criterion 12.5. the shoulder lines up perfectly with the rail. I now have a full Geissele 12.5" Super Duty (besides mag catch, bolt catch, and selector).
 Attached File |
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Posted: 7/18/2023 4:47:22 AM EST
[Last Edit: ScoutH57]
[#35]
Quote HistoryOriginally Posted By spyderboy03: The Geissele 12.5 is a hair longer than the Criterion 12.5. the shoulder lines up perfectly with the rail. I now have a full Geissele 12.5" Super Duty (besides mag catch, bolt catch, and selector). https://www.ar15.com/media/mediaFiles/57550/PXL_20230718_030535486_jpg-2889878.JPG That’s pretty damn slick Your shoot it yet? Curious how they gassed it |
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Posted: 7/18/2023 6:11:21 AM EST
[#36]
Quote HistoryOriginally Posted By ScoutH57: That’s pretty damn slick Your shoot it yet? Curious how they gassed it Just got it yesterday evening. It'll be a couple weeks, however, I installed a BRT .0635 gas tube on it. That's supposed to be equivalent to a .0615 gas port. That worked well on my Criterion barrel. The Criterions are supposed to be .067 ish, which was perfect unsuppressed with an H2 but a little gassy with the Turbo K for my liking. That's why I went with the BRT tube. The Geissele website says the gas port is .070, but it looks smaller to me. I don't have pin gauges and calipers are way too hard to tell if there is a difference of .001-.005. However, here is a pic of a 16" Triarc that is .070, the Criterion in the middle, and the Geissele on the right.  Attached File |
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Posted: 7/18/2023 6:29:21 AM EST
[#37]
Quote HistoryOriginally Posted By spyderboy03: Just got it yesterday evening. It'll be a couple weeks, however, I installed a BRT .0635 gas tube on it. That's supposed to be equivalent to a .0615 gas port. That worked well on my Criterion barrel. The Criterions are supposed to be .067 ish, which was perfect unsuppressed with an H2 but a little gassy with the Turbo K for my liking. That's why I went with the BRT tube. The Geissele website says the gas port is .070, but it looks smaller to me. I don't have pin gauges and calipers are way too hard to tell if there is a difference of .001-.005. However, here is a pic of a 16" Triarc that is .070, the Criterion in the middle, and the Geissele on the right. https://www.ar15.com/media/mediaFiles/57550/PXL_20230718_023829173_jpg-2889998.JPG I know pin gauges are the correct way but with calipers I got .066-.067 on my 12.5 G, and with the same calipers on a DD 10.3 it read .069-.070 so I would guess it's pretty accurate. |
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Posted: 7/18/2023 8:20:14 AM EST
[#38]
Quote HistoryOriginally Posted By bulletboy5150: I know pin gauges are the correct way but with calipers I got .066-.067 on my 12.5 G, and with the same calipers on a DD 10.3 it read .069-.070 so I would guess it's pretty accurate. If I use calipers, I get .066-.067 on the Criterion and .067-.069 on the Geissele. |
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Posted: 7/21/2023 7:44:58 AM EST
[#39]
Quote HistoryOriginally Posted By spyderboy03: Just got it yesterday evening. It'll be a couple weeks, however, I installed a BRT .0635 gas tube on it. That's supposed to be equivalent to a .0615 gas port. That worked well on my Criterion barrel. The Criterions are supposed to be .067 ish, which was perfect unsuppressed with an H2 but a little gassy with the Turbo K for my liking. That's why I went with the BRT tube. The Geissele website says the gas port is .070, but it looks smaller to me. I don't have pin gauges and calipers are way too hard to tell if there is a difference of .001-.005. However, here is a pic of a 16" Triarc that is .070, the Criterion in the middle, and the Geissele on the right. https://www.ar15.com/media/mediaFiles/57550/PXL_20230718_023829173_jpg-2889998.JPG Everything is gassy with a Turbo K though lol As a side note Aero is making a “pro line” 12.5 midlength barrel, I got 2 of them and so far I like them. Gassed well, come with a gas block screw divot. Very smooth shooting, it’s like an 18” with a length gas system shrunk down. Haven’t wrung it out for accuracy testing yet. It’d be pretty nice option paired with a chopped Geissele rail I think. |
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Posted: 7/21/2023 9:25:29 AM EST
[Last Edit: spyderboy03]
[#40]
Quote HistoryOriginally Posted By ScoutH57: Everything is gassy with a Turbo K though lol As a side note Aero is making a “pro line” 12.5 midlength barrel, I got 2 of them and so far I like them. Gassed well, come with a gas block screw divot. Very smooth shooting, it’s like an 18” with a length gas system shrunk down. Haven’t wrung it out for accuracy testing yet. It’d be pretty nice option paired with a chopped Geissele rail I think.  The Criterion was gassed really well for unsuppressed shooting. Another member pin gauged his G 12.5 at .068, which I think will be great unsuppressed or with a low back pressure can. I'm really starting to consider going dedicated on mine and going down to like a .057 or .0595 BRT tube. That Aero barrel sounds nice. ETA: I should also try my Resonator K on it just for fun. It lives on my HD 300 blk though. |
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Posted: 8/1/2023 11:33:45 PM EST
[#41]
Posted this in another thread:
Got mine out today. Very happy so far. Only had time to zero at 50 and check a 5 round load I am developing. With less than 50 rounds through it, I shot a similar group to my 16" Triarc today that has a 4-16x on it. The Triarc always shot better than the Criterion Core the Geissele replaced. That is with an EOTech and 3X Primary Arms micro magnifier. Ejection was between 3 and 4 with a Super 42 w/H2, YHM Turbo K, and BRT .0635 gas tube. |
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Posted: 8/2/2023 12:21:30 AM EST
[Last Edit: 1168RGR]
[#42]
Quote HistoryOriginally Posted By spyderboy03: https://media.tenor.com/7Syr-HlRBXIAAAAC/thats-true-kramer.gif The Criterion was gassed really well for unsuppressed shooting. Another member pin gauged his G 12.5 at .068, which I think will be great unsuppressed or with a low back pressure can. I'm really starting to consider going dedicated on mine and going down to like a .057 or .0595 BRT tube. That Aero barrel sounds nice. ETA: I should also try my Resonator K on it just for fun. It lives on my HD 300 blk though. .068” in a 12.5” is great if you want to run steel case unsuppressed. Its a step or two large if you shoot proper ammo. .0625” will run any brass cased ammo though, .065” would be preferred for max reliability. .068” is two steps past necessary, and more appropriate for a 11.5”. If you’re going dedicated suppressed with a BRT tube, .057” will do the trick nicely. |
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Posted: 10/17/2023 11:27:30 AM EST
[#43]
Bumping this up in hopes Geissele is peer pressured into releasing a 11.75" SMR Mk1 rail in time for Christmas.
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Posted: 10/25/2023 5:36:01 PM EST
[#44]
Quote Historythis |
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