I am a 1911 guy, and tried the M&P45 and HK45. I stuck to 1911 for 45, but would recommend the H&K over the M&P, by the slimmest of preference margins.
Beg, borrow and rent as many units as you can get your hands on and pick the one you shoot best.
The ones mentioned already are all good guns and will serve you well. You just need to find the one that fits you.
If you like the size, manual of arms and the functionality of your G19, I would suggest looking into a G30SF. About the same size as the G19, .45 acp, 10+1, and you are familiar with how it functions and how to maintain it. I have 2 G30’s, very accurate. I am leaving to shoot a GSSF match with one of them in about 10 minutes.
M&P45 or HK45, neither is a bad choice, though it would be nice to have more capacity in a full size gun.
You have a great Glock… not a bad idea to stay with Glocks. They’re awesome defense guns.
[b]If you’re not in a rush, I would try to be patient and wait for the G21 Gen 4! Should be available before long.
I think it’s going to be an awesome, high capacity (14-rounds) .45, even if nothing changes but a move to the Gen 4 grip.[/b]
The G30 is a wonderful compact 11-shot .45 as well.
M&P45 mid-size w/Apex Duty Kit. This will be very similar in size to your G19, as noted in the photos below.
M&P45 mid-size compared to a G19:
Here is a G19 on top of a M&P45 mid-size:
Looks like that G19 was “hot” during the photo session!
G30SF is another consideration, 10+1 capacity, similar size as the G19 but a bit thicker (as the M&P would be as well).
Since he’s shooting a G19 now (great choice), probably best to stick with consistent platform (Glocks) for uniformity of trigger, operation, maintenance, etc?
Or… be patient for a G30 Gen 4, perhaps!
In terms of operation, the M&P and Glock are very similar. In terms of maintenance, the G19 and G30 use entirely different parts, for the most part.
And is the M&P trigger really so bad that it’s impossible to train on Glocks and M&Ps?
HK45/45c or M&P45/45c would be my choices.
Yes.
Yes, but the G19 and G30 are identical for ease of maintenance and complete tear down vs. the M&P or other platform which are different and can be much more difficult for complete tear down.
No, I have and shoot both Glocks and M&Ps, reasonably well I believe. You can get a pretty nice trigger with them both. But the trigger operation and feel between the two is typically quite different, especially with regard to reset.
Some would argue with good merit, however, that it is best to focus one’s time, attentions, and skills on a single pistol, if not at least on a single family of pistols rather than spread themselves out thinly across multiple different pistol types. Especially if one wishes to maximize skills for use under pressure. Of course, it all depends on one’s individual wishes and firearms objectives. Not everyone is training to be the finest-tuned combat expert possible. But if you are, focusing on a single pistol, a single carbine, and a single shotgun makes very good sense. And if your work or activities tend to send you into harm’s way often, with a relatively high possibility of needing to engage armed opponents, then focusing your efforts on the fewest weapon systems necessary is wise.
“Beware the man who’s mastered one gun.” 
Thanks to all for the help, I humbly decided to get another 19 to accompany the one ive got. I came to this answer after researching a thread on having more than one gun the exact same. Thanks to all for the help. Now to save on some ameriglo pro glo sights.
Not a bad idea…
I’ve owned a G21 and liked it a lot but ended up selling it. I have small hands and didn’t like the fit of the gun in my hand. I now have a M&P 45 Midsize and love the feel of it. I also had the Apex DCAEK and Warrent Sights installed on it. The weapon just feels good in my hand. Trigger is very nice with the Apex kit and it is plenty accurate. The only reason I don’t own a Glock 21 is I don’t like the feel of it in my hand. Other than that there is no reason not to own either.
Local Gun shop has a new Gen3 glock 19, they are holding it for me, till i pick it up later today. Thanks to all for the help. In the end it was the thread about having two of the same gun. Same holster, mags, manual of arms, etc.
Maybe send it off to Boresight or Bowie for some grip work, etc to differentiate it from it’s counterpart?
Maybe send it off to Boresight or Bowie for some grip work, etc to differentiate it from it’s counterpart?
steve m: You have learned and made a wise choice. Well done!
steve m… I know you want to scratch that .45acp itch and I don’t blame you, .45acp is my favorite pistol caliber for a lot of reasons.
If I were you, I’d keep focusing on the G19 as you have decided to do, and after the G21 Gen 4 and G30 Gen 4 guns have been out for a while, check them out.
After handling the other Gen 4 grips, I think the Gen 4 .45’s are going to become extremely popular guns… and one of them would probably make a great .45 for you, and still within the familiar Glock platform. As much as I like my G30 and G21SF, I’m really looking forward to the Gen 4 .45’s with great anticipation myself.
I just picked up my new Gen 3 glock 19 and have it set up like my other one. Vickers extended mag release, smooth trigger assembly from glock 17 and have ordered another set of ameriglo pro-glo sights. The sights work for me. Thanks again to all for help and assisitance. For some reason when I put the smooth trigger in the 19, the trigger smoothed out so much so that I had to check the connector to see if glock had messed up and put a 3 1/2 lb in it. All in all im happy and still trying to master one platform as many people have suggested before I attempt to move on to another.
If its for Carry,Range Toy and Competition…
I think The Hk45C is the best option
You can find a barely used one for $850. or a new on for around $975.
ROG and Fist INC make some great holsters for it.
8 Rounds, Smaller than a Commander Size 1911, Weighs like a Glock and even more reliable than a Glock Or M&P.
This.
I am a 1911 guy, but when I wanted to get something different for carry (mainly wanted higher capacity) I shot the M&P, G21 and 30, the FNP and the Springfield XD.
Ended up getting the XD45 tactical. I liked that I can carry 13+1 and the trigger was better than the M&P. The FN was nice, but twice the price of the XD and not twice the gun.
Great choice (even though i’m a M&P guy)
But HUGE thanks for coming back and letting us know what you chose.
MANY ask “what do you guy’s think i should get, or ask questions”
then never return or at least take the time to post and let everyone
know what they chose.