I’m posting this thread to see what others have noticed with their G45.
I have the G45 and the 19X but I’d like this thread to be limited to the G45 or at least be specific to the models.
The main reason I’m posting this is because I was recently issued the G45 and none of my after market magazines work in it. I have ETS 22 and 30 rounders, Magpul 17 and 21 rounders and every magazine that I have used other than the Glock magazines have induced a malfunction. I have used the new Gen5 Glock magazines and older Glock brand magazines and all have worked with no issue. Since the G45, I have had ZERO issues with any of the aftermarket magazines until now. I have used these magazines in all generations of Glocks including a Gen5 17 that I use very often.
When these malfunctions occurred, I was using either American Eagle 147gr or Federal 147 HST.
The malfunctions while using the ETS mags were failure to feed and two times, the rounds did not stack properly and were basically loose in the magazine.
The malfunctions in the Magpul magazines were all failure to lock back.
While I use OEMs for the most part, I did use ETS 22rd and Magpul 17 & 21rd mags in my G45 when I shot it the first couple of weeks.
All brass cased ammo (my Magpul Glock mags aren’t reliable with steel) and they worked fine with no issues, but I only used one of each magazine one time only so I would know that they have worked in the past.
Since then and 95% of the time, I train only with OEMs, as I’ve had bad luck with PMAGs and steel. ETS have been fine but OEMs for the most part for me.
I’m not really concerned about the after market mags as I have more OEM mags than all the after market mags combined. I’m just curious because I have had zero issues until the G45.
Fired 150 rounds of AE9FP and 121 rounds of P9HST2.
21rd pmag failed to go to slide lock a little less than half the time, did not depend on ammo.
17rd pmag failed to feed HST from slide lock a few times, sending round into the ramp. Occurred when mag was partially loaded.
No ETS mags on hand to try.
OEM 17rd and 24rd, no malfunctions.
I bought two 19X’s and quickly purchased the first 45 that showed up, retail, not blue label. I’ve shot it several times and it now has roughly 800 rounds thru it. I also recently ordered 60 for our department based on my experiences and the desire to transition back to the 9mm. I have used several generations of factory magazines without failures. I’m not sure why but I’ve never bought an after market Glock magazine. I have considered a 9mm AR based carbine or pistol and as it would be a toy, might do it then. I’m not knocking on you but why use the after market mags? After the price of the weapon, accessories, ammo, etc it seems to not be the place to save a few dollars.
Is there a minor design change to the interior geometry of the new models that could be enough to cause a tolerance stacking issue?
My G45 has run flawlessly and has become my favorite Glock. I’ve only run factory Gen 3, 4, and 5 mags though. OEM Glock mags are cheap enough, I don’t consider any of the aftermarket options desirable. I paid $18ech for my last batch of OEM Gen 4 mags.
I have run Magpul mags in all three of my 19X’s and both G45, not a single issue with any of them. Several thousand rounds multiple weights and brands. My magpul mags are older ones as well, and I know there were some issues with weak springs in older ones. Weak springs would cause the issues you have had. I had three brand new G23 mags that wouldn’t lock the slide when empty. Replaced the springs and they worked perfectly. I would recommend contacting magpul and I would imagine they would replace them for you.
I have no experience with the ETS mags, so I can’t offer any information.
My gen5 G19 MOS has all the same internal changes that they’ve done to the G45, and it has run flawlessly for about 400 rounds with OEM old and new, PMags, and ETS. With AE 147gr, HST 147gr, and Rem UMC 115gr.
What are the internal changes you’re talking about? I’m aware of the little notch on the breech face and the lack of half moon cutout on the front strap. Is there anything else?
The 21 rounders are great for training I obtained over half of these magazines for free so why not?
My last count off OEM Glock 17 rounders was 34 so my issue isn’t the lack of OEM magazines or saving money, it’s the wanting to know why the aftermarket mags don’t work.
I honestly think the Magpul mags can work ok when clean, but when it comes to steel cased ammo, it’s a friction issue.
Mine worked fine for several hundred rounds, then I started getting failures, mostly some type of failure to feed while using Wolf / Tula (I have a lot of it).
At first, since the mags had been fine, I attributed it to the G19. However when unloading some GL9 mags I would push the round out to unload, and the following round would take an excessive amount of time to feed into position - usually around .5 seconds but sometimes 2-3 seconds. Obviously if you are slow firing, you may not see it. But during any time of moderate rapid fire, this will cause issues.
I haven’t had an issue with G17/19 ETS magazines and I think this is because the polymer is slicker than the Magpul mags.
And at first I sidelined the plastic aftermarket mags for training only, then just loaded them up with brass for a rainy day and put them in an ammo can and broke out more OEMs for training. Aftermarket mags were worth the try when you could get them on sale for $12 and OEMs were $25, however I can get OEMs for $19 and aftermarkets are now $15, it’s no longer the case (especially with the issues I have with Magpul mags).
I really liked ETS 22rd mags and they have been great. But with OEM 19 / 24 rd mags, they are becoming less and less novel.