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Posted: 10/18/2018 9:52:19 PM EDT
[#1]
Yup, thats the ejector tab. I was thinking though, that fixed it in my gun, but I wonder how other brands of 9mm bolts are machined and if they might malfuction differently than mine.
I have a PSA hybrid bolt. |
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Posted: 10/18/2018 10:11:23 PM EDT
[#2]
got mine today from a 8/17 order
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Posted: 10/19/2018 8:00:57 AM EDT
[#3]
Anyone know if a Maglula works with the EndoMag?
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Posted: 10/19/2018 10:11:36 AM EDT
[#4]
It does not.
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Posted: 10/19/2018 10:15:54 AM EDT
[#5]
Quote HistoryQuoted:
Just got two from RIP-Yitaski. The one he modified for Hex Mags still fits perfectly in a Gen 2 Magpul. Next week we'll see if we can't Dremel it enough to fit into a GI mag. The curvature looks very close to a Gen2 Magpul, so it's a question of fitting the stuff btwn the ribs, I think. |
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Posted: 10/19/2018 11:40:16 AM EDT
[#6]
Ordered standard 3-pack 9/30, shipped 10/17, out for delivery today.
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Posted: 10/19/2018 12:02:16 PM EDT
[#7]
Tracking says Saturday by 8pm for delivery
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Posted: 10/19/2018 1:24:58 PM EDT
[#8]
Quote HistoryQuoted:
Who is this RIP-Yitaski? Is this a ARFCOM member? |
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Posted: 10/19/2018 6:31:23 PM EDT
[#9]
Ordered 08-27 and shipped TODAY!!! Guard Version
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Posted: 10/19/2018 6:54:58 PM EDT
[#10]
Quote HistoryQuoted:
Is that the ejector tab? I don't have one to look at yet. Not sure if it is a problem for the CMMG Guard version which comes without an ejector tab. |
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Posted: 10/19/2018 7:12:07 PM EDT
[#11]
Quote HistoryQuoted:
Ordered 08-27 and shipped TODAY!!! Guard Version |
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Posted: 10/19/2018 9:31:45 PM EDT
[#12]
Quote HistoryQuoted:
I ran 3 of the Guard version ones this morning. With all 3 I had an issue where the BHO would engage with one round left in the mag. I had to trim the top of the BHO tab on the Endomag on all 3 mags I tested. After that they were flawless. Picture below is unaltered BHO tab on the right and the left is one that was trimmed. Was able to do it with my pocket knife....no Dremel needed. http://c3junkie.com/wp-content/uploads/2018/10/Endomag-BHO2.png Video of it working with two different Guard Uppers in FA. One of them is an early barrel with an M4 extension (dual feed ramps). The other one is newer w/ the single feed ramp for Glock mags. Neither was an issue. Endomags worked great with both. https://www.youtube.com/watch?v=_XaGtM2NT38 ETA: Gen 2 Pmag. |
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Posted: 10/19/2018 10:11:23 PM EDT
[#13]
Quote HistoryQuoted: Same problem with mine. BHO with one round in. Checked with 3 pmag housings. Figure tolerance stacking, and variances here and there. Shaved about .040 off the top of the BHO pusher on the follower and GTG. Only ran a couple of rounds. But perfect for my SBR lower. ETA: Gen 2 Pmag.  Attached File |
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Posted: 10/19/2018 10:41:59 PM EDT
[#14]
Ordered 12 Guard versions on 8-1-18. Received shipping notice today 10-19-18.
Super excited. Just ordered the CMMG Guard build kit, receiver, and bolt weight kit. |
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Posted: 10/19/2018 10:43:25 PM EDT
[#15]
We need a version for the 40-round PMAGs for PCC competitions. That would be stellar.
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Posted: 10/20/2018 12:36:06 AM EDT
[#16]
Quote HistoryQuoted:
Tracking says Saturday by 8pm for delivery |
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Posted: 10/20/2018 12:25:10 PM EDT
[#17]
Tested out my EndoMags in Gen 2 PMAGs this morning. I've got ranger plates on my 9mm PMAGs and I didn't notice any issues with FTF when resting the magazine on a table. The only FTF I had was when I tested having a single round in the magazine and I wouldn't doubt it being from an non-committal charging. Retesting was successful.
With a full magazine, I was not successful in fastening the magazine with the bolt closed...which isn't a big deal as I have issues doing that with other guns. Other than that, all magazines worked without a hitch. I'm pretty happy with the EndoMags. I would've liked an orange or purple follower, but nothing a little paint can't fix. |
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Posted: 10/20/2018 4:08:57 PM EDT
[#18]
So far I've only racked the bolt a few times with snap caps, but it is nicking the rear corner of the pmag lip.
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Posted: 10/20/2018 7:00:25 PM EDT
[#19]
Quote HistoryQuoted:
Tested out my EndoMags in Gen 2 PMAGs this morning. I've got ranger plates on my 9mm PMAGs and I didn't notice any issues with FTF when resting the magazine on a table. The only FTF I had was when I tested having a single round in the magazine and I wouldn't doubt it being from an non-committal charging. Retesting was successful. With a full magazine, I was not successful in fastening the magazine with the bolt closed...which isn't a big deal as I have issues doing that with other guns. Other than that, all magazines worked without a hitch. I'm pretty happy with the EndoMags. I would've liked an orange or purple follower, but nothing a little paint can't fix. |
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Posted: 10/20/2018 10:17:45 PM EDT
[#20]
Quote HistoryQuoted:
So far I've only racked the bolt a few times with snap caps, but it is nicking the rear corner of the pmag lip. |
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Posted: 10/21/2018 12:34:30 AM EDT
[#21]
Quote HistoryQuoted:
We need a version for the 40-round PMAGs for PCC competitions. That would be stellar. |
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Posted: 10/21/2018 6:54:43 AM EDT
[#22]
Took some pics comparing the Guard version version blowback.
Floor plate of Guard version is marked:  Note that these pics are comparing ones I did NOT modified. I cut 5 blowback one for the Guard after clearing with MEAN that it wouldn't void my warranty. You can see that they cut/sanded the ejectors off theirs as well as it looks a little rough. 
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Posted: 10/21/2018 9:45:59 AM EDT
[#23]
Quote HistoryQuoted:
Wouldn't that nicking of the rear of the mag be a BCG problem, nothing to do with the Endomag insert? Quote HistoryQuoted:
Quoted:
So far I've only racked the bolt a few times with snap caps, but it is nicking the rear corner of the pmag lip. |
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Posted: 10/21/2018 10:06:18 AM EDT
[#24]
Quote HistoryQuoted:BCG chewing the mag is correct. Several post about this with pics. |
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Posted: 10/21/2018 10:09:42 AM EDT
[#25]
Quote HistoryQuoted: Was this with a Guard version or a standard blowback AR9? |
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Posted: 10/21/2018 11:58:59 AM EDT
[#26]
There is a small but definite difference in the width of the feed rib on the bottom of a “Colt only” 9mm bolt and the rib on a Glock 9mm AR bolt. The rib is slightly narrower on the Glock bolt, just enough to clear the lips of a Glock magazine.
Colt only bolts’ rib is wider because Colt-type magazines are “double stack, double feed” where Glock’s magazines are double stack, but “single feed”, meaning they feed from the center (the magazine tapers at the top to move rounds into the center). The Colt magazine design is based (VERY heavily) on the Uzi magazine, so the feed rib doesn’t have anything to do with standard M16-type magazine dimensions. I wonder if the people having magazine damage are using “Colt only” bolts. It would be interesting to learn what bolts folks are using when they report damage or no damage. It may not be about whether it’s a “Glock bolt” or not, but the only way to know if that’s related is to relate which bolt is being used to whether or not there’s damage. |
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Posted: 10/21/2018 1:31:25 PM EDT
[#27]
I am getting the mag damage. Im using the KAK enhanced bolt
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Posted: 10/21/2018 4:57:52 PM EDT
[#28]
Quote HistoryQuoted:
I am getting the mag damage. Im using the KAK enhanced bolt |
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Posted: 10/21/2018 5:18:35 PM EDT
[#29]
Quote HistoryQuoted:
That’s a Glock compatible bolt too... |
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Posted: 10/21/2018 5:39:52 PM EDT
[#30]
Quote HistoryQuoted:
Nailed it? I need to do some measuring on my own bolts... |
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Posted: 10/21/2018 10:39:24 PM EDT
[#31]
Ordered mine on 10/8/2018, shipped on 10/17/2018. got them 10/20/2018. Colt type.
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Posted: 10/21/2018 11:02:26 PM EDT
[#32]
Got my 3 pack in couple days ago. Went out today to test. No bueno. Colt pattern ramped 9mm bolt from NFA. Ejector failed to eject and caused a jam that caused the empty brass, still in bolt face, to gouge and screw up ejector. Happemed in semi and full auto mode. I can see where the guard version would work better. Ejector is gonna have to be made out of something way more durable/harder or even metal. Each new mag jammed after only a few rounds. Great idea and support the cause. Just bummed it didn’t work as I hoped for. I normally use a hanh block with this and it runs flawless. New frontier modular ramped 9mm bcg.
https://youtu.be/Sdw8KdDR_6E |
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Posted: 10/22/2018 12:13:33 AM EDT
[#33]
I tried mine today in my PSA rifle. It has a hybrid BCG. Had a few jams. Shot about 100 rounds. It already has wear on the mag feed ramp so I don't expect these to be a long term thing. I also have a PSA pistol that has a glock only BCG. I tried to just cycle some dummy rounds through that gun and it didn't want to feed at all. Rounds weren't getting completely chambered. Tried to extract but extractor wasn't over the rim of the round so I had to drop the mag and go from there. I don't think I will be buying more. I will stick with my glock mag lowers.
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Posted: 10/22/2018 4:58:06 PM EDT
[#34]
Got mine today. CMMG Guard Version. They chopped off quite a bit and all surfaces are below or at the level of the M3 lips. First observation is that the dust covers will no longer fit. Posting pics for reference.
More testing after I feed the dogs.  They are circling like sharks.
 Attached File Attached File Attached File Attached File Attached FileTesting Notes: Gen 3 Pmags Dust covers don't fit anymore. LRBHO works on last round not with one round left so I didn't have to trim as amphibian did above. Same problem as everyone else with seating a full 30 rnd magazine with bolt closed. No damage to the magazine from the Guard/Banshee bolt. Manual cycling first 2 mags I had a couple jams but I did not rap the mag on a hard surface to fully seat all rounds against the backstop. Apparently if the round is a bit forward it will bounce off the feed ramp instead of riding along it. The nose winds up jammed upwards at a 45 degree angle and it doesn't make it into the chamber. Once I loaded a mag and seated all rounds fully there were no more jams. Tried a few times, all good. So far so good. Live fire tests to follow at the range this week. |
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Posted: 10/23/2018 8:45:05 PM EDT
[#35]
I live in FL, and my Endo Mags shipment went from Georgia to Florida, to Chicago IL...
Needless to say, they wont get here any time soon. Edit: They arrived today 10/24/18. Not sure why the tracking said it went to Chicago after it had already been in FL. |
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Posted: 10/24/2018 6:25:12 PM EDT
[#36]
For you guys running the CMMG guard uppers on standard AR-15 lowers with the EndoMags, are you running standard carbine/heavy/h2 buffers and getting any malfunctions? Ideally I'd like to use a SBR AR-15 lower I have on hand and not need to swap anything to get the setup to run...
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Posted: 10/24/2018 6:52:26 PM EDT
[#37]
I have my tuning info here: http://c3junkie.com/?page_id=538
CMMG recommends a standard carbine buffer not heavy. They used to recommend a 308 spring but Ive heard that they are now recommending a standard carbine spring. I'm running mine in full auto and that is too fast for my tastes. As seen in my link Im using an A5 buffer tube, 9mm Blitzkrieg hydraulic buffer and 556 Tubb flat wire spring. This same configuration has smoothed out my 556 setups as well. |
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Posted: 10/24/2018 7:26:42 PM EDT
[#38]
Quote HistoryQuoted:
For you guys running the CMMG guard uppers on standard AR-15 lowers with the EndoMags, are you running standard carbine/heavy/h2 buffers and getting any malfunctions? Ideally I'd like to use a SBR AR-15 lower I have on hand and not need to swap anything to get the setup to run... |
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Posted: 10/24/2018 8:00:34 PM EDT
[#39]
Wow, thanks for the great info! I guess it'll take a lot more tuning than I had hoped.
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Posted: 10/24/2018 8:09:28 PM EDT
[#40]
Quote HistoryQuoted:
Wow, thanks for the great info! I guess it'll take a lot more tuning than I had hoped. |
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Posted: 10/24/2018 8:17:48 PM EDT
[#41]
Quote HistoryQuoted:
For you guys running the CMMG guard uppers on standard AR-15 lowers with the EndoMags, are you running standard carbine/heavy/h2 buffers and getting any malfunctions? Ideally I'd like to use a SBR AR-15 lower I have on hand and not need to swap anything to get the setup to run... I then swapped the upper over to another SBR lower, with a sopmod carbine stock and check function with a standard H2, GTG. Knowing that I intend to run the upper suppressed, I then swapped over to a H3, function check was GTG. Finally, I swapped out the buffer and spring to Slash's XH Carbine buffer with his wolf spring. Again function check was GTG. Unfortunately I ran out of time to do any test firing today. Hopefully tomorrow. I'll update if I can get to the range and test out the system. |
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Posted: 10/24/2018 8:26:20 PM EDT
[#42]
Quote HistoryQuoted:
Maybe not. You may be fine with your current buffer and spring since CMMG uses carbine buffer and spring in their Guard build anyway. Amphibian was fine tuning for full auto rate of fire as well as smoothness and the typical carbine buffer/spring was too fast. That may not be a concern for you. Quote HistoryQuoted:
Quoted:
Wow, thanks for the great info! I guess it'll take a lot more tuning than I had hoped. Cyclic rate isn't an issue for semi. However, I know some people like to know this data as my data can also be used to determine how to build out a softer shooting setup. Note that there is a difference between a 'soft' shooting setup and 'flat' shooting. A lot of PCC shooters running blowback setups, use strong buffer springs and heavy buffers so all the mass of the bolt never hits their shoulder to keep it shooting 'flat' (minimize that red dot from bouncing). However, with blowback, it is hard to get it to shoot 'soft'. Running a hydraulic buffer in these straight blowback systems helps. As you can imagine running a delayed blowback + hydraulic is even better. I am trying to do a 'soft' and 'flat' shooting setup AND have a slow cyclic rate. |
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Posted: 10/24/2018 11:56:35 PM EDT
[#43]
I also bought a CMMG Guard kit that arrives tomorrow. I bought it with the Action Tuning Kit that CMMG sells for the Guard, which is essentially a set of different weights you can add to the carrier. I wonder how the tuning will go with that. I currently use a Tubb flatwire carbine spring and an H buffer on my SBR lower for 5.56. I guess I could start with the heaviest weight for the carrier and go down until I get reliable cycling. I always like to go the heaviest on the buffer/recoil system that reliably cycles on blowbacks, to me it "feels" the best.
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Posted: 10/25/2018 12:03:33 AM EDT
[#44]
Quote HistoryQuoted:
I also bought a CMMG Guard kit that arrives tomorrow. I bought it with the Action Tuning Kit that CMMG sells for the Guard, which is essentially a set of different weights you can add to the carrier. I wonder how the tuning will go with that. I currently use a Tubb flatwire carbine spring and and H buffer on my SBR lower for 5.56. I guess I could start with the heaviest weight for the carrier and go down until I get reliable cycling. I always like to go the heaviest on the buffer/recoil system that reliably cycles on blowbacks, to me it "feels" the best. |
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Posted: 10/25/2018 7:24:07 AM EDT
[#45]
Quote HistoryQuoted:
I also bought a CMMG Guard kit that arrives tomorrow. I bought it with the Action Tuning Kit that CMMG sells for the Guard, which is essentially a set of different weights you can add to the carrier. I wonder how the tuning will go with that. I currently use a Tubb flatwire carbine spring and and H buffer on my SBR lower for 5.56. I guess I could start with the heaviest weight for the carrier and go down until I get reliable cycling. I always like to go the heaviest on the buffer/recoil system that reliably cycles on blowbacks, to me it "feels" the best. will respond to you over there. |
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Posted: 10/25/2018 8:00:44 AM EDT
[#46]
Quote HistoryQuoted:
There is a small but definite difference in the width of the feed rib on the bottom of a "Colt only" 9mm bolt and the rib on a Glock 9mm AR bolt. The rib is slightly narrower on the Glock bolt, just enough to clear the lips of a Glock magazine. Colt only bolts' rib is wider because Colt-type magazines are "double stack, double feed" where Glock's magazines are double stack, but "single feed", meaning they feed from the center (the magazine tapers at the top to move rounds into the center). The Colt magazine design is based (VERY heavily) on the Uzi magazine, so the feed rib doesn't have anything to do with standard M16-type magazine dimensions. I wonder if the people having magazine damage are using "Colt only" bolts. It would be interesting to learn what bolts folks are using when they report damage or no damage. It may not be about whether it's a "Glock bolt" or not, but the only way to know if that's related is to relate which bolt is being used to whether or not there's damage.  On both bolts and all six of my mags (Gen 2 Magpuls), the bolt hits the ejector and won't close. I can't get the bolt to close at all. I don't see anyone else reporting this problem, so I don't know if I'm doing something wrong, if it's a manufacturing defect or if it's an incompatibility problem. 
 
I'm not sure whether to send these back or power through, spend more money on it with CMMG Guard and shave the ejectors off. |
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Posted: 10/25/2018 12:15:21 PM EDT
[#47]
Quote HistoryQuoted:
I'm not sure whether to send these back or power through, spend more money on it with CMMG Guard and shave the ejectors off.  Attached File |
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Posted: 10/25/2018 12:25:45 PM EDT
[#48]
I had that issue of the bolt face hitting the back of the ejector on a few of my uppers as well. I tried swapping various uppers, lowers, and 9mm bolts. The bolts are either from CMMG, Spinta, RRA, or Macon Armory. I tried both Anderson and PSA lowers. The upper receivers were from RRA, Colt, and Model 1 (all dedicated 9mm upper receivers).
For me it seemed to follow the bolts. I can't remember who manufactured any of my 9mm bolts that worked ok except one. It's a Spinta angle cut 9mm bolt that I purchased as a blem. |
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Posted: 10/25/2018 12:40:11 PM EDT
[#49]
Quote HistoryQuoted:
... I can't remember who manufactured any of my 9mm bolts that worked ok except one. It's a Spinta angle cut 9mm bolt that I purchased as a blem. |
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Posted: 10/25/2018 12:42:08 PM EDT
[#50]
Quote HistoryQuoted:
Don't send them back. Looks like the only major problems are with non-Guard bolts hanging up on the ejector tab. If you read page 10 you will see how 67Cobra corrected the hangup by shaving off a bit of the ejector tab. Here is the pic he provided. This tweak may fix your problem. Top circle is unmodified, lower circle is the corrected ejector tab. https://www.AR15.Com/media/mediaFiles/374164/ejector_tab_fix_jpg-716636.JPG I'll contact Mean and make sure that won't void my warranty. |
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