[Jerry48]

First range trip for mine this morning. I had a last minute whem and mounted a Riton red dot on it. It's a cheapO I had laying around but hey, I've got less than $400 in the RXM.

 

[Rich_J]

Well I hit the range, gun shoots great, accurate, POI right on but there’s a major design flaw. Being a lefty I sling shot the slide on a full mag all the time, well when using Glock mags the slide does not drop, slide stop gets hung up, this happened every time with Glock mags, no issue with pmags.

Good to know.

I'm a lefty also, I will keep an eye on this next range session. In my brief initial outing of 115 rounds I didn't notice any problems racking rounds in, but will try again with both PMAGS and Glock mags when they arrive.

 

[PilatusTurbo]

Cant find the link to the 8SKEP1 video (Im a novice on this forum)!

I managed to get my 407k mounted. I had to file on the Ruger dowel pins to get them to drop into the slide to fit within the mounting bosses that Holosun provides at the front of the optic. They ended up about 0.030" above the slide surface before the optic would sit flat with no air gaps. I also shortened the M4 screw on the Extractor Depressor Plunger side so that it would not foul the extractor claw movement.

I like it, the k series is a good match for the slide width of the RXM.
View attachment 1354171

I have a three pack of Glock 19 Gen 5 mags on order from Brownells. I didn't notice any problems with JHP ammo in my initial outing, but I will try both PMAGS and Glock mags with my carry stuff (Federal HST 124 standard pressure and Gold Dot 124+p) next time. Can concur the PMAGS are a lot harder to load than I recall of Glock mags.

I had to relieve the lower edge of the trigger guard with a sandpaper covered dowel. Taking that edge off makes it less likely to dig in to my middle finger knuckle while shooting.

So far so good. I really like this gun. I hope Ruger comes out with a G26 configuration that uses the 12 round PMAGS soon, as well as a 17 form factor. Maybe by SHOT show.

I forgot to add, I appreciate you coming over and posting your experience with the optic mounting, here. Thank you! I'm hoping this thread here at GT kinda serves as the ultimate and central online thread for this gun. Reddit and forums are kinda all over the place and good information is usually sporadically sprinkled throughout those. This thread is gonna be long, but have a lot of different points of info in it.

 

[Rich_J]

Cant find the link to the 8SKEP1 video (Im a novice on this forum)!

Sorry, I wasn't the one who mentioned the video.

 

[Rich_J]

Cant wait! Really don't like “Stealth Grey”!

Honestly, I wasn't thrilled about it either, until I saw it in person. Both Handgun Hero and various pictures and videos make the "gray" much lighter than it is in real life. Looking at it on my desk, I'd say it was more a shade of black than gray, to be honest.

But heck I'm color blind so probably not a great judge of color hue.

 

[Rich_J]

I forgot to add, I appreciate you coming over and posting your experience with the optic mounting, here. Thank you! I'm hoping this thread here at GT kinda serves as the ultimate and central online thread for this gun. Reddit and forums are kinda all over the place and good information is usually sporadically sprinkled throughout those. This thread is gonna be long, but have a lot of different points of info in it.

Yes, this is a good resource for the RXM. Hope it continues to provide info, good and bad.


Only thing I'm wondering is if I can shoot GSSF matches with it, but I'm not optimistic.

 

[Jerry48]

First range trip for mine this morning. Had a last whem to throw a red dot on it. Had a cheapo Riton laying around so I thought why not. Fit was perfect & easy install. 🤞

 

[FrankenGunBuilder]

First range trip for mine this morning. Had a last whem to throw a red dot on it. Had a cheapo Riton laying around so I thought why not. Fit was perfect & easy install. 🤞

Love my Riton's.

 

[Maccabeus]

Really good video by "8SKEP1" about using Glock mags with the RXM. Well worth watching.

So I sorta watched it earlier (multitasking while shaving this morning) and I'm trying to gather the "so what?" summary in my head.

Magpul mags should work as intended.
Gen 5 mags should work as intended.

Earlier mags, such as the Gen 3 that he used, may not always work perfectly.

But what is the risk? Potential premature slide lock during firing? Or something else?

Edit to add: Somehow I missed this earlier post:

... when using Glock mags the slide does not drop, slide stop gets hung up, this happened every time with Glock mags, no issue with pmags.
...

I guess that is one of the potential problems.

 

[PilatusTurbo]

@Rich_J I did forget to mention, regarding K models: With my DPP Holosun K plate for a gun, I had to file the screw tops down a few thousandths to allow the optic to sit completely flat with zero air gap. Wasn't the front posts on that plate, those were good. Just the screws with a hair too high, even fully snugged down.

Love my Riton's.

Dang. Had my chance to get a Riton for like $130 when my local shop closed, but I didn't know Riton's were really solid. Missed that one

 

[Rich_J]

@Rich_J I did forget to mention, regarding K models: With my DPP Holosun K plate for a gun, I had to file the screw tops down a few thousandths to allow the optic to sit completely flat with zero air gap. Wasn't the front posts on that plate, those were good. Just the screws with a hair too high, even fully snugged down.

Ah gotcha. Yeah so it took me two tries on the 407k mounting before I was happy with the height of the front dowel pins. I had torqued the M4 screws down and the next morning was looking at the slide, and saw just a teeny bit of air gap at the front. Then I noticed I could see both screws. Hmm.

I took the optic off, and removed the dowel pins, then placed the optic back. No air gap. So clearly I had mismeasured the pin heights. What I should have done was to measure them IN PLACE on the slide. At any rate, a few more strokes of the file and the optic sat flat, with the pins, with no air gap. I will allow I could have probably skipped the pins, but despite being only 0.030" of surface for the optic to bear on they do positively locate it.

I did submit a note to Ruger Customer Service asking if they had a plate or (hint hint) were perhaps adding a pair of "shortened" k series dowel pins, to accommodate the oodles and oodles of Holosun K series optics out there that I'm sure lots of folks have. On the other hand it would have been nice if Holosun had fully implemented the RMSc standard, but for whatever reason they didn't.

 

[anthonyduwahoyeoma]

I purchased a LEO PRISICION ODEN USMC RED SLIDE for my RUGER RXM. Hoping the slide internals swap over flawlessly.

 

[RUT]

>Magpul mags should work as intended. Gen 5 mags should work as intended.<<

Both worked in mine today without a single incident.

 

[Jarhead Al]

I purchased a LEO PRISICION ODEN USMC RED SLIDE for my RUGER RXM. Hoping the slide internals swap over flawlessly.

WE NEED PICTURES

 

[PilatusTurbo]

Ok, BIG UPDATE and RANGE REP: I traded something in and got a SECOND RXM. Yeah, because I'm stupid, and I wanted one. Or I love the gun, and I'm gonna be investing in the infrastructure of this platform, so having a second FCU or FCI or whatever they call it is gonna be RAD. The cost on these isn't prohibitive, and with my trade in I didn't have to pay much more. I enjoy the hell outta these things, so it came naturally to me.

So, the same PMAGs are still having issues in the new RXM... Except the PMAGs that it came with are not. Why? I looked very closely at the now 6 PMAGs I have; I sent 3 back to Magpul for their engineers to review soon. Here's all 6, next to each other, as leveled as I could get the photo, with a solid white background. Notice anything?

Yeah, the 3 PMAGs on the right are presenting the rounds higher. You can literally see a small, but very important difference. Even the feed ramp is physically higher in the front, than the 3 on the left. Took them apart, and I'm not able to really discern any major difference. The followers have some minutely different markings, but not consistent among the good vs bad PMAGs. The springs were a little different, but still. I'm gonna be presenting this to Magpul, as well. They've been awesome, but they're leaning towards it being the gun. It's not.

I ran the exact same break in test; no cleaning the new RXM since I didn't clean the first one, and the manual says take it right to the range without cleaning. It ran with 100% reliability, with the 2 PMAGs it came with and that 1 out of the 4 PMAGs they sent that seemingly works, too. Zero nosedive failures, or any other kinds of failures.

Same 100+ rounds of Magtech 115 gr JHP, and 200 rounds of S&B 115 gr FMJ. I ran this test even faster than the first RXM's testing, and the gun got uncomfortably HOT at a couple points.

Also, for good measure, I brought RXM #1 and ran one mag of the Gen 5 Glock 19 through the new RXM #2, and vice versa. A PMAG of the same JHP (one of the working PMAGs) through RXM #1. All smooth sailing, zero malfunctions. It's the PMAGs having differing tolerances, period.

The RXM is a great shooting gun, and I decided to get another one to really run my own test series. All the shops I go to in my area are sold out, and my main Sportsman's showed them in stock. When I went in, I asked how many more they got and they told me they had ONE left. They're selling rapidly. I also decided to get a second RXM, as I'm hopeful that the accessories infrastructure for these from Ruger and Magpul grows rapidly; frames, different slide lengths, the sky is the limit. If it doesn't, this thread won't go anywhere and y'all can make fun of me If it does takeoff and be a hit like I think it will, I'll already have a tested, reliable secondary.

 

[cciman]

Seems familiar... I've seen this theme discussed before in GT about issues with Pmag follwers.

 

[PilatusTurbo]

Seems familiar... I've seen this theme discussed before in GT about issues with Pmag follwers.

I would imagine I'm not the first. It's a bummer, because I want the PMAGs to be ultra reliable, but it's just hit and miss. I'm sorry Magpul, and I love ya, but nah.

I love these damn RXMs.

 

[Maccabeus]

Ok, BIG UPDATE and RANGE REP: I traded something in and got a SECOND RXM. Yeah, because I'm stupid, and I wanted one. Or I love the gun, and I'm gonna be investing in the infrastructure of this platform, so having a second FCU or FCI or whatever they call it is gonna be RAD. The cost on these isn't prohibitive, and with my trade in I didn't have to pay much more. I enjoy the hell outta these things, so it came naturally to me.

So, the same PMAGs are still having issues in the new RXM... Except the PMAGs that it came with are not. Why? I looked very closely at the now 6 PMAGs I have; I sent 3 back to Magpul for their engineers to review soon. Here's all 6, next to each other, as leveled as I could get the photo, with a solid white background. Notice anything?

Yeah, the 3 PMAGs on the right are presenting the rounds higher. You can literally see a small, but very important difference. Even the feed ramp is physically higher in the front, than the 3 on the left. Took them apart, and I'm not able to really discern any major difference. The followers have some minutely different markings, but not consistent among the good vs bad PMAGs. The springs were a little different, but still. I'm gonna be presenting this to Magpul, as well. They've been awesome, but they're leaning towards it being the gun. It's not.

I ran the exact same break in test; no cleaning the new RXM since I didn't clean the first one, and the manual says take it right to the range without cleaning. It ran with 100% reliability, with the 2 PMAGs it came with and that 1 out of the 4 PMAGs they sent that seemingly works, too. Zero nosedive failures, or any other kinds of failures.

Same 100+ rounds of Magtech 115 gr JHP, and 200 rounds of S&B 115 gr FMJ. I ran this test even faster than the first RXM's testing, and the gun got uncomfortably HOT at a couple points.

Also, for good measure, I brought RXM #1 and ran one mag of the Gen 5 Glock 19 through the new RXM #2, and vice versa. A PMAG of the same JHP (one of the working PMAGs) through RXM #1. All smooth sailing, zero malfunctions. It's the PMAGs having differing tolerances, period.

The RXM is a great shooting gun, and I decided to get another one to really run my own test series. All the shops I go to in my area are sold out, and my main Sportsman's showed them in stock. When I went in, I asked how many more they got and they told me they had ONE left. They're selling rapidly. I also decided to get a second RXM, as I'm hopeful that the accessories infrastructure for these from Ruger and Magpul grows rapidly; frames, different slide lengths, the sky is the limit. If it doesn't, this thread won't go anywhere and y'all can make fun of me If it does takeoff and be a hit like I think it will, I'll already have a tested, reliable secondary.

Well, since you're spending money, now you need to buy a different grip module for one of them.

You don't want your two guns to get confused at a glance!

 

[PilatusTurbo]

Well, since you're spending money, now you need to buy a different grip module for one of them.

You don't want your two guns to get confused at a glance!

Trust me, I'm not made of money, but I am gonna have fun with this one. I did need to trade something in in order to make it realistic.

That will definitely be a part of my on-going series with the RXM. I'm gonna get a different grip module and/or slide as soon as they're available. Which, again, I really hope Ruger and Magpul are already arming up for that. If they don't get the different slides, comp barrels/slides, grip module sizes like 26 and 19X/45, etc, it's just a big miss.

 

[FTMFXR]

Double your pleasure, double your fun!