I'd like to try an optic sighted 9mm, I see 2 choices. Both are already cut for optical sights and have the other features I'd prefer.

One is the M&P CORE. Other is a Glock MOS.

Anyone own both and have a preference? And why? I hear stories about the triggers being rough and requiring a too-long reset on the Smiths. Anything to this?

Thanks,

gb

Well, you did post in a Smith and Wesson forum, so I think you can guess the answer here. lol
They both have their pros and cons, I've owned both, actually just bought my M&P CORE 4.25 last week, and I love it more than any Glock I've owned. The ergonomics on it are way better for my hand vs the Glocks. Also, in my opinion the CORE has a better trigger, I'd say its equivalent to the Glock trigger with the Ghost 2.5 kit. My advice is to rent both at a range and shoot them side by side, see which one you shoot better. I had about twice the accuracy with my M&P, probably because it sits more comfortable in my hand.

The main difference is that the CORE will co-witness with the suggested optics straight out of the box. I understand that the Glock does not. I own a 5in PC CORE and a G19 with a ZEV slide, both have an RMR. The G19 is my EDC and the M&P is one of my fun pistols that doubles as a back up for home defense. I have likes and not so likes for both but in my opinion my reasons for those will not be the same as your reasons. Beg, borrow but don't steal one of each and see which one your like better, or buy both.

How accurate are the cores I have a full size stock m&p 9
2014 model and I don't think it's that accurate at 25 yards

The Glock MOS and the CORE are both manufacturers' attempts to make a generic slide cut to take a variety of optics. As such, they compromise the real, proper mounting of a Red Dot Sight (RDS) on a pistol slide.

The proper way to do this is to choose a good optic and have your slide milled specifically for that optic and install suppressor height sights to co-witness through the RDS.

The MOS has a relatively thick mounting plate adapter that raises most RDS too high above the slide. The RDS can only be mounted to this plate, which although thick, is not thick enough for RDS mounting screws to get a full purchase. Sights have flown off the Glocks, and the OEM MOS iron sights sit too low to cowitness properly through the elevated RDS. You will need to buy taller aftermarket Glock sights to get the system to work properly, and then you still have a weakened compromise.

S&W did a better job with the CORE, as the RDS mounting is more secure and lower. It comes with taller sights. However, it's still a generic compromise. If you want to go cheap, with an inexpensive RDS, the CORE will probably give you better performance for less money in the long run. However, one of the best optics, the Delta Point Pro, will not fit on a CORE.

Many people prefer the ergonomics of the M&P. Stock triggers are generally a little better with the CORE than the MOS.

Both guns can be customized with triggers and other mods, but in my mind you're throwing good money into comparatively substandard systems.

That is my opinion, not backed up with personal experience with either a MOS or CORE. I read of the weaknesses of these two systems, so I went with a custom milled slide on my FS M&P and a Trijicon RMR 06. I spent a little more up front, and I have added other enhancements to make this pistol a real good shooter. I am pleased with it in all respects.

However, I am not a competitor like some of the real experienced guys on this board. I get schooled regularly here by the people who have really BTDT.

In my decision making, money is a fourth tier factor, after performance, reliability, ease of use. I have paid my dues in past decades with doing things on the cheap and can now afford to do them right. That is not the case for everyone, so your decisions must be based on your priorities.

I'm not trying to piss anyone else off for their choices, but some fail to explore all the options before they pop for the heavily marketed manufactured compromises.

I own several Smith's with the C.O.R.E. system and several Glocks with the M.O.S. system. I have to say, my Trijicon RMR fits more snug on the C.O.R.E. system than the M.O.S. system and I really think Smith did a better job implementing their system. It just seems more secure, the screws seem to go in further for a more secure fit, and you can co-witness right out of the box (at least with my M&P 9L PC ported with surpressor sights.) With the Glock system, you would need to replace the stock sights in order to get it to co-witness through the optic. Both are great guns; I just like Smith's optic mounting system a lot better.

I own both and have to agree with everybody else that the mounting on CORE models is a lot more secure than the MOS.

Still undecided whether I like the red dots on my pistols.
Lately I've been leaving them off and using irons instead. As my eyes age I'll probably start using the red dots more.

Forgetting the optic stuff for minute, which gun do you prefer? For me, I don't like the glock grip angle. When I shoot my wife's EDC G19, I shoot it OK. When I grab my M&P9c it feels perfectly shaped to my hand.

I have avoided buying any Glock for years for many reasons, including the grip angle.

Recently, I borrowed my son's G4 G19 and shot it the same day as my FS M&P 9mm. I was shocked. Shocked I tell you. Shocked.

It shot great. The grip angle was not a problem. The trigger was no more nasty than the stock triggers I've gotten from S&W, but it was different in a way I didn't particularly like. Bit I've swapped out my S&W triggers too. From a rest the G19 shot a bigger group than my M&P.

Without going into a lot more detail, I have ordered a custom milled G4 G19 with upgraded slide internals, trigger, barrel and a RMR mounted in a properly milled slot, with suppressor height night sights and an enhanced grip. Suarez International Gunfighter model. It's hard waiting.

I think both my FS and G19 are going to shoot great, at least in part because of spending $$$$ to upgrade both of them. They are very similar, and just a little different. While I don't recommend the MOS, I am changing my opinion on Glocks in general.

If I didn't have either gun yet and was going to mount an RDS on a milled slide, I am more familiar with my M&P and would recommend that. But I have had a hard time getting the sights I want for the M&P, and Glock had more options. Honestly, both are fine platforms you can learn to shoot very well, and Glocks are even more ubiquitous than M&Ps for aftermarket options, accessories, parts and repairs.

"The proper way to do this is to choose a good optic and have your slide milled specifically for that optic and install suppressor height sights to co-witness through the RDS."

Having come to the same conclusion, I just shipped my slide today to ATEi for milling.

Loving these red dot discussions around here lately as it's a topic I'm very interested in myself.

__________________
America First

I would agree with possible avoiding the MOS.
- I bought one (GEN4) and noticed the Gen 4 trigger is worse than the Gen 3. I took out the complete trigger assembly from an old Gen 3 17, swapped it in my new Gen 4 17, boom, better trigger.

- Local gunshop allowed me to fiddle with a Leupold Delta point, which is the red dot I wanted to purchase, and bam...saw it...doesn't sit all that great on the MOS. Doesn't profile very good, not custom looking or deep enough like a custom milled slide would be.

Long storyt short, I would not buy a new MOS and would have a slide custom milled if I could do it all over again.

*On a sied note, that new SIG 320 with the RMR has some descent flow/lines to it.

"Long storyt short, I would not buy a new MOS and would have a slide custom milled if I could do it all over again."


Feeling better all the time about my decision to send my slide for milling to accomodate the RMR. Now just have to be patient for it's return home.

__________________
America First

I was in the market to buy a 5" RMR-ready race gun, really hot for the new Walther Q5 Match and the Sig P320 RX, but none available or a clue when these will be available.


I ordered a M&P 9L CORE, a JPoint 4 and a Apex aluminum trigger. Everything has shipped and will arrive next week. Reading about the M&P, I think my choice is a good one and my new 9L will be a fun range toy.

I don't shoot my Glock 19 as well as my M&P's, so didn't consider a $1,000+ upgrade to install a RMR.

Not accurate? Which guns do you feel are accurate?