S&W M&P 9mm

I was bought this gun by my mother for my birthday recently and I have a few questions about the gun. My first one is how well does this gun hold up to the Glock when it comes to putting 1000's of rounds through it. If there has been any problems or malfunctions please chime in and let me know what they were or what is usually the most common pieces that have to be fixed. Another question I have is about the upgrades for the gun. This could include sights, holsters, spring upgrades, trigger upgrade, etc. I will be posting a picture soon of the gun. It is an older model I'm pretty sure because it will still fire without the clip in the gun and it doesn't have the same break down switches on it. That might make a difference on the upgrades that could be placed on the gun as well.

Thanks for all the help!

That's what I'm trying to make sure of. I might have a different gun. I haven't been able to see it yet besides this picture so I don't fully know myself. I just know what I've been told.

Here is the picture: if it uploads this time

I figured it out. It's not an M&P it's a Model SW9VE Pistol by Smith and Wesson. So now is this gun a good gun? I don't know much about it so any input would be great. What is it capable of shooting (accuracy wise), reliability (or issues with the gun), and any of the previous questions I asked originally about the M&P line (upgrade etc.)

okay well this is an update to the sigma pistol I got a week back. I have shot about 100 rounds through it and I find it awful so far. I'm not quick to judge a gun so i will keep working with it to come to a final conclusion about. The trigger was different but it wasn't that gritty to me. So I took it apart, cleaned it and look at the parts that needed to be grinded down. After inspecting them I found that they were already grinded down by the previous owner and the springs had been tampered with. I looked online and there was suppose to be two springs, an inner and outer spring, but instead there was only one and it didn't seem to fit quite right itself. I took a coil off of the spring and it fit pretty well. The trigger seemed to lighten up a bit but then comes my other problem. The accuracy was horrible for me. I am not a big pistol shooter so experience I will admit I lack but when shooting my Beretta Pistol even on double action a couple times I was much more accurate than the Sigma. I even stood at 10-15 yards from a 2 liter with water and I couldn't hit it until like shot 6. I don't know if it's just me, the gun (probably a combination of the both) but it just doesn't work. I even took a paper targer and shot at 15 yards away at it with two magazine. I focused hard on slow nice trigger pulls, no flinching etc and the shots were still everywhere!! I'm going to check out some other ammo as well. I shot 115 grain (forgot the brand at this moment). I don't know if that would really be a problem though with it though.. Any advice on this especially with mechanical work that could be done to the gun or what parts should I inspect that could point out a problem here? I'm going to take it soon to a gunsmith to look at it for me to see if there is any damage or problems with the gun.