I'm wanting to bring my P320C into the 2020s by adding a red dot, but I'm torn between these two.

Price would be similar. Durability is reportedly similar. Both are direct mounts without monkeying with adapter plates.


Romeo X Pro
+ Lower profile and uses the factory height sights
+ Made in the USA
+ Adjustable brightness levels
- Open emitter
- Battery replacement
/ Red, like all my other optics


Holosun SCS
+ Closed/sealed emitter
+ Slightly larger window
+ Solar/indoor light charged with 20k power reserve
- Requires suppressor height sights
- Made in China
- Auto-adjusting brightness (but apparently better than most others)
/ Green (though I've never tried a green dot)


Has anyone tried both and developed a preference one way or the other?

I haven’t used them but checked them both out as I was also considering the two of them. I really liked the reticle in the Holosun better. It seemed more crisp to me, even with my astigmatism.

I thought though that Holosun had a red reticle variant as well…coulda swore I saw in a while back. I may be wrong though.

This message has been edited. Last edited by: OttoSig,

They have red reticle options in some of their sights, but not the SCS. (Reportedly has something to do with the larger size and greater power consumption of red emitters.)

Maybe I was looking at the EPS in red.

Either way I believe the reticle options are the same. I liked the circle without the dot.

I personally found the SCS to be too bright in most circumstances. I personally prefer the EPS.

I can't comment on the Romeo but picked up an SCS 320 last year and am very happy with it. (It's currently on my Springfield Echelon). The auto brightness works very well for me. I don't really have a preference between red and green dots. That said, I don't have any problem picking up the green on the SCS. The closed emitter was the biggest deciding factor for me. While I don't intend to roll around in the mud, T-shirt lint is another matter and the closed emitter eliminates that issue.

quote:

Originally posted by RogueJSK:
I'm wanting to bring my P320C into the 2020s by adding a red dot, but I'm torn between these two.

Price would be similar. Durability is reportedly similar. Both are direct mounts without monkeying with adapter plates.


Romeo X Pro
+ Lower profile and uses the factory height sights
+ Made in the USA
+ Adjustable brightness levels
- Open emitter
- Battery replacement
/ Red, like all my other optics

When did Holosun stop making Remeos for SIG?

quote:

Holosun SCS
+ Closed/sealed emitter
+ Slightly larger window
+ Solar/indoor light charged with 20k power reserve
- Requires suppressor height sights
- Made in China
- Auto-adjusting brightness (but apparently better than most others)
/ Green (though I've never tried a green dot)

Green is much faster to pick up than the red

I would go for the Sig RDS for preference.

But, more importantly, I vote against the Holosun because of the auto-adjusting brightness. There's plenty of reports of auto-adjusting screwing up at the wrong time because either you're in the shade or out of the shade. While it's apparently better than most others, you don't want it to be just as shitty as the others at the wrong time.

I have a SCS on a Walther PDP and find the auto brightness too bright. It needs to be dropped down one bump, but you can’t do that on the SCS. For that reason, I prefer manual adjustment RDS over the SCS.

I'm another one in the don't like auto adjust. I have the SCS Carry and it's too bright. I'm trying to get a test RMR HD to try, but I think I'm just going to stick with manual adjustable optics now because I like it dim.

I've not shot either, but I've handled both. Correct me if I'm wrong, but if I'm remembering correctly the P320 version of the SCS requires suppressor height sights for cowitness. I know the RomeoX has a low enough deck height that it does not. That alone would be enough for me to chose the Romeo over the SCS. The Romeo is also at least assembled in the US, so it has that going for it as well. I was very impressed with the one I handled at the LGS a couple of months back, and it would definitely be my choice between the two.

quote:

Originally posted by 9mmepiphany:

Green is much faster to pick up than the red

For some users.

One thing that I have learned over and over again as I have explored pistol optics and rolled them out at my job is that there is no guarantee that one user's eyes will work the same as another.

How a specific color, size and brightness of dot works varies considerably from user to user. I have some issues with my red color vision. I have to set most red dots close to their maximum brightness to be usable (Trijicon usually second from the highest and Steiner and Holosun at their highest). With green (Holosun only), I am 3-4 settings below the max, even in pretty bright sunlight. However I work with some people that can barely see green at my brightness setting. I have shot other people's guns when they are having issues and cannot see their dot at all at their setting.

For most users with normal color vision, either color will probably work ok. The fact that one color or the other may be more attractive to the eye may not be a benefit and could pull the eye off of the target and to the dot.

Just some additional food for thought.

I have an RMR on my 320, the older slide without rear sight, in a red auto adjusting reticle.
I also have a Holosun 407K on a 365 with the green dot. I set mine for the highest and lock it. Yes, its very bright in a darkened enviroment, but I'm not trying to shoot bullseyes, just center mass.
Both of mine are open emmiters and you can train for if/when they get covered or clogged, and you should train like that as well with a closed emmiter too.
Pick whichever "looks" the best for you. Personally, I like the green single dot, but that's just me.

quote:

Originally posted by josp:
Both of mine are open emmiters and you can train for if/when they get covered or clogged, and you should train like that as well with a closed emmiter too.

Yeah, my other pistol optics are open emitters. So while closed is a slight positive, it's not a must-have, and it is looking like it's not enough to outweigh some of the other negatives of the SCS.

If I was dead-set on a closed emitter, the Romeo X Pro has a closed emitter version too. It's just nearly twice the cost of the base open emitter Romeo X Pro. Again, potentially nice to have, but not 2X the cost nice.


I'm thinking I'm going to go with the Romeo X Pro for the P320 here. I have another Glock that needs an optic, so I may grab a Holosun SCS for that just to test out a green dot with auto-adjust. The Glock SCS is cheaper than the 320 SCS, and unlike the 320 SCS is low enough that it doesn't require adding suppressor sights, so it's not as much of a gamble since it'd require less financial investment. And there are a lot more Glock shooters than P320 shooters out there, so if I don't like it it'd probably be easier to resell.

I have played with both red & green dots. I really do not have a large enough round count with optics to be really proficient with them as yet.
But I have come to the conclusion that I like the green over the red.
The green looks much more sharp as a dot while the red seems more like a blob.

quote:

Originally posted by RogueJSK:

quote:

Originally posted by josp:
Both of mine are open emmiters and you can train for if/when they get covered or clogged, and you should train like that as well with a closed emmiter too.

Yeah, my other pistol optics are open emitters. So while closed is a slight positive, it's not a must-have, and it is looking like it's not enough to outweigh some of the other negatives of the SCS.

If I was dead-set on a closed emitter, the Romeo X Pro has a closed emitter version too. It's just nearly twice the cost of the base open emitter Romeo X Pro. Again, potentially nice to have, but not 2X the cost nice.

Where are you finding the open X Pro for half the cost of the closed?

I am seeing $429 for the open and $529 for the closed?

Sorry, that was in my head due to my cost calculations for the build.

The optics themselves aren't 2x the cost of each other. But my total cost would be.

My P320C doesn't have an optics cut. So I'm having to either have the slide cut or replace it with a new optics compatible slide. (I'm leaning towards the latter.)

You can currently get a P320C slide with factory mounted open RXP for ~$530.

Whereas with the enclosed RXP that kind of package deal is not an option. I'd have to buy it alone for ~$530, and then a separate P320C slide for another $250-$300, and the total cost would be around $800 total.

$530 vs. $800ish.

quote:

Originally posted by RogueJSK:
I'm thinking I'm going to go with the Romeo X Pro for the P320 here. I have another Glock that needs an optic, so I may grab a Holosun SCS for that just to test out a green dot with auto-adjust.

Which is exactly what I did.

I grabbed a lightly used Holosun SCS MOS for one of my Glocks, and member DaBigBR hooked me up with a good deal on a factory P320C slide with mounted Romeo X Pro. I've had the chance to put them both through their paces and thought I'd post an update with my thoughts on both.

(Note that it's not completely apples to apples, as the MOS SCS differs from the 320 SCS, and they're on two different platforms.)


Holosun SCS MOS

The direct mount to Glock MOS slides is great, since you don't have to mess with either factory or aftermarket optic plates. They even matched the slide serrations on the optic body. I like the low profile, which is something featured in both of these optics. Factory height iron sights cowitness.

The lack of battery changing is a nice feature. It apparently runs for ~20k hours without any light exposure as well, so as long as you don't stick it in a dark safe for years at a time without taking it out, you should never have to worry about it going dead.

The downsides are that the FOV is smaller than other optics I've used, and the optic is auto brightness only. I personally don't find the reticle to be too bright, which is a common complaint I've seen elsewhere... unless I'm using the circle-dot reticle.

The extra light from the large circle makes the reticle appear much brighter, bordering on too bright. But I found I don't want to use the larger circle-dot reticle with such a small optic window anyway. It takes up too much of the optic window. When using just the 2 MOA dot reticle, the brightness is fine (for me), and you have a better view of the target anyway, so I'll be leaving it on that.

Probably not the best choice for someone new to handgun optics or less experienced with handguns in general due to the smaller and less forgiving optic window, but if your fundamentals are solid then optic window size matters much less.


Sig Romeo X Pro (open emitter version)

I'm very impressed with this optic. It has the clearest glass of any mini red dot I've tried, as well as the sharpest reticle. I have minor astigmatism, but there is zero distortion with this reticle, which is interesting.

Like the SCS MOS, it's low profile enough to use factory height iron sights. Unlike the SCS MOS, the FOV is wide enough to take advantage of the circle-dot reticle without taking up too much of the window, if that's your preference.

If you have a P320 with DPP cuts, I hightly recommend giving this optic a shot. It's reportedly much more durable than prior Romeo optics. There's even a closed emitter version, if you want that (for a bit more $).

And if you don't have an optic cut on your P320 slide, Sig is offering optic cut P320 slides with factory mounted Romeo X optics as well as mounted Xray3 sights, which are available for a reasonable price: ~$550 street price. And considering the street price of the Romeo X Pro itself is ~$450, you're getting the slide and the included Xray3 sights for just $100 more, which is a good deal.