What are the common improvements/upgrades for a M&P15

I bought a new AR three summers ago. I just could not get good groups with proven ammo! My best friend, had been a armorer in the Army, fired it and the first words from his mouth were, "Your trigger sucks!" I put a $70 4 pound aftermarket trigger on it and now get consistent 1" 200 yard groups with a scope (having old eyes stinks!) I also added pop-up open sights and a bi-pod adapter. Trying to keep the weight reasonable!

Ivan

He's right the trigger sucks, at least mine does. I took mine out and shot it tonight with new H2 buffer and Tubbs flat wire spring $44 bucks well spent.
 
What do all these extra things get you? I've found that the stock AR M4 is pretty good as-is.

For example, do you think a "flat wire" buffer spring is going to improve the stock one?

Are you competing with it? Is there a reason to upgrade the trigger? Soldiers bet their lives on the stock trigger and many times aftermarket fire control accessories can make the gun less reliable.

Handguards are cool but how much are you going to hang off it? Pretty soon a lightweight M4 can turn into a behemoth.

Most of the time these endless accessories in the AR market do nothing for you but make your wallet lighter.

8#4.5 oz less the mag.
The only other thing I'd hang on the end is a light with a QD for critters in the yard at night.

Shot it tonight with the H2 buffer and new Tubbs flat wire spring brass now lands around 3:30-4:00 prior it was about 1:30 also the brass no longer has the small dent 5/8" up from the bottom.
 
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8#4.5 oz less the mag.
The only other thing I'd hang on the end is a light with a QD for critters in the yard at night.

Shot it tonight with the H2 buffer and new Tubbs flat wire spring brass now lands around 3:30-4:00 prior it was about 1:30 also the brass no longer has the small dent 5/8" up from the bottom.
You could have only spent $4.95 on a BCM extractor spring upgrade kit and would have achieved the same results. :rolleyes:
BCM SOPMOD Bolt Upgrade/Rebuild Kit
 
I put a sling and a red dot on our Sport II. I put a scope on the Ruger. I'll probably put a sling on it too and maybe at some point a new trigger. The Sport II trigger is fine but the Ruger trigger sucks. Everything else works fine as is. No need to go buying a lot of **** it doesn't need.
My Ruger AR556's trigger sucked bad right out of the box. I added the JP ENTERPRISE 3.5 lb. JP Reduced Power Spring Kit (JPS3.5) to my Ruger and the trigger is now very sweet. ;)

JP - Spring Kits
 
I've added a Houge pistol grip.
Vortex 1-6 strike eagle on a cantilever mount.
Fab Defense Pointing foregrip set.
I have a LaRue Tactical MBT-2S Trigger on intergalactic back order.
An ambidextrous safety.
Phase 5 15" low pro slope nose M-lok free float handguard/low profile gas block.
Warhammer mod 2 charge handle.
4.6oz H2 buffer,
A Tubbs flat wire buffer spring on order.
I'm leaning towards a .223 Wylde barrel and some form of muzzle brake, it has an unthreaded barrel now.
Anything else I should be looking at?

Ammunition...
 
I deleted a number of replies that were were rude and insulting. That sort of behavior is unacceptable on this board and is no way to greet a new member.

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I bought the M&P Sport II and like it mostly how it is. I later stole its A2 style pistol grip for another build and replaced it with a more vertical Magpul that I like better on short guns, and then replaced the hand guard with a Magpul MOE that I like better than the round no heat shield type that it came with.

Anyway it’s a pretty darned good rifle right out of the box. I don’t feel the need to change anything else on it. Mechanically it’s very well made and can certainly perform as it is.


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I'm amazed at how many people come to forums like this (and many other special interest forums) seemingly to ask for advice when what they really want is confirmation.
 
I'm amazed at how many people come to forums like this (and many other special interest forums) seemingly to ask for advice when what they really want is confirmation.

I'll assume that's directed at me since it's posted here. Can you point out where I asked for confirmation? I asked "What are the common improvements/upgrades for a M&P15" Do you have any recommendations beyond what I've done so far? Please spread that insight around!
 
I deleted a number of replies that were were rude and insulting. That sort of behavior is unacceptable on this board and is no way to greet a new member.

You’re welcome to express your opinion and disagree, but do it in a civil manner. Keep the snide remarks to yourself.

From our rules:

What about sites like BCM, PSA, SGAMMO, S&W, RUGER, etc.?
OP, as rincar stated, PRACTICE, PRACTICE, PRACTICE!
 
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Pretty over the top huh?

Whew! The size of your scope puts your AR over the top for me. Looking at it I can’t tell what the purpose of your carbine is.

Adjustable stock and 16” barrel with 15” handguard is a nice carbine package. (True confession is I have built two this way).

The size of the scope defeats the light, quick handling for self-defense and two stage trigger is best on a range / target rifle. I have a couple of SIG Romeo5 RDS and they are compact and lightweight.

As for the trigger I prefer ALG ACT for my AR’s. In a self-defense situation I will not use the two stage trigger.

Since you are considering a .223 Wylde barrel I suggest you step up to a 18” or 20” barrel. I have a 16” .223 Wylde AR and am so far totally unimpressed with it. I have been considering replacing it with a 20” .223 Wylde barrel which will make it a target and hunting gun. In it’s defense I have not sat down at the reloading bench and start experimenting with different bullet weights.

Rather than replacing the barrel on your gun I suggest you buy another Upper Receiver and put the barrel on it. You are going to want a new handguard anyway. Uppers are not that expensive and you can find them with the Forward Assist and Ejection Port Cover already installed. Two complete uppers will give you a lot of versatility.

So new barrel, scope and two stage trigger along with some of your other parts means a second AR. Of course you already know that is coming from this group of AR enablers.
 
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My preference is building my own to fill different uses. I did purchase a different name complete because it was actually cheaper than what it would've been to build myself using 85% of their parts like I planned before crunching numbers.

We all like these rifles because they're versatile and we can make them our own with all the aftermarket parts if you can find them in stock. I also play guitar and joined this forum to get away from the same old clicks and fanboys arguing over which new digital platform is better - while bashing everyone that doesn't agree by labeling them "cork sniffers" (usually because our gear is more expensive). The thing is I'm older, been a musician for 33yrs, I know what I like and play professionally - where most of the cork-sniffer commenters are probably 15 year old kids unable to play Twinkle Twinkle yet. I wanted some fresh air in an interest relatively new for me. I got my ccw and renewed once, so 6yrs now. My AR addiction began 5yrs ago and I love literally unplugging and getting into something so completely different to change things up, but of course forums are forums regardless of subject. People are people and if I prefer my Daniel Defense or BCM - I should go to their forum? If someone wants to add or change what they want but you don't agree so obviously they should go to a different forum??? Well I'm really happy I found this when I did!!! You see, that means I've only wasted about an hour here BUT I know all I need to know already. Amazing that someone can ask for your opinion and all you can do is take the opportunity to bash them. I won't make that mistake. So congratulate yourself! I thank you Mr AR Gods! No more wasting my time here! People are ******s regardless of what forum you find them on. What a shame.
 
My preference is building my own to fill different uses. I did purchase a different name complete because it was actually cheaper than what it would've been to build myself using 85% of their parts like I planned before crunching numbers.

We all like these rifles because they're versatile and we can make them our own with all the aftermarket parts if you can find them in stock. I also play guitar and joined this forum to get away from the same old clicks and fanboys arguing over which new digital platform is better - while bashing everyone that doesn't agree by labeling them "cork sniffers" (usually because our gear is more expensive). The thing is I'm older, been a musician for 33yrs, I know what I like and play professionally - where most of the cork-sniffer commenters are probably 15 year old kids unable to play Twinkle Twinkle yet. I wanted some fresh air in an interest relatively new for me. I got my ccw and renewed once, so 6yrs now. My AR addiction began 5yrs ago and I love literally unplugging and getting into something so completely different to change things up, but of course forums are forums regardless of subject. People are people and if I prefer my Daniel Defense or BCM - I should go to their forum? If someone wants to add or change what they want but you don't agree so obviously they should go to a different forum??? Well I'm really happy I found this when I did!!! You see, that means I've only wasted about an hour here BUT I know all I need to know already. Amazing that someone can ask for your opinion and all you can do is take the opportunity to bash them. I won't make that mistake. So congratulate yourself! I thank you Mr AR Gods! No more wasting my time here! People are ******s regardless of what forum you find them on. What a shame.
You are on point! I put mine together the way I want it to perform, for how I am going to use it. I'm very happy with how mine is shooting and I'd recommend everything I've done to anyone that's interested in improving theirs, but to each their own.
My trigger still hasn't showed, so I guess I can't recommend that yet. Larue has a very good reputation, so I'm fairly sure I wont be dissapointed.
 
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