Top 6 Smith and Wesson M&P 15 Sport 2 problems & How To Fix Them

Last Update:

I’ve been out in the field testing the Smith and Wesson M&P 15 Sport 2, and let me tell you, it’s been quite the experience. 

While using this firearm, I’ve encountered several Smith and Wesson M&P 15 Sport 2 problems that need addressing. We’re talking about extraction problems, feeding issues, a couple of hammer and firing pin dilemmas, tumbling bullets, and even some trigger issues. 

I’m going to lay out each problem and its solution, plain and simple. By the end of this, you’ll be well-equipped to handle any problems that come your way with the Smith and Wesson M&P 15 Sport 2.

Overview of Smith and Wesson M&P 15 Sport 2 problems & Fix

Extraction ProblemReplace damaged or missing o-ring under extractor.
Feeding IssueUse the warranty to get a new bolt carrier group.
Hammer IssueReplace the hammer and insert a new hammer trigger pin.
Problem with the Firing PinSend back to Smith & Wesson for a replacement firing pin.
Issue with the Tumbling BulletsClean barrel thoroughly to remove copper fouling.
Trigger IssueBreak in the rifle by firing 200-300 rounds and lubricate the trigger.

Problems & Solutions of Smith and Wesson M&P 15 Sport 2

1. Extraction Problem

Okay, the first snag I ran into with the M&P 15 Sport 2 was extraction. Imagine you’re at the range, all geared up and ready to shoot, but then the ammo gets jammed in the chamber. Yep, it’s as frustrating as it sounds. 

You might think this is a one-off, but nope—I’ve seen this happen to brand-new firearms right out of the box. 

It’s like the gun just doesn’t want to let go of that spent casing. It disrupts your flow, messes with your aim, and just takes the fun out of shooting.


Here’s what I did to fix it. I took off the bolt carrier group and removed the extractor. And guess what? The o-ring under the extractor was either missing or damaged. Yeah, a tiny piece is causing a major headache. 

After replacing the o-ring, the gun started behaving much better. I went back to the range and tested it out—several mags later, not a single extraction issue. 

So, if you’re facing this issue, I strongly recommend checking that o-ring. Trust me, it works!

2. Feeding Issue

Let’s dive into another hiccup I experienced: a feeding issue. You’re all set for some range time, but then you notice that rounds aren’t making their way into the chamber as they should. What’s happening? I found that the problem often lies with the bolt carrier group. 

It appears that a manufacturing error could lead to an improperly formed extractor. And what’s the result? The brass gets caught on the extractor, bringing everything to a grinding halt. 

It’s not just a one-time thing; it can happen frequently, throwing off your whole shooting experience.


So, what’s the solution? After much frustration, I decided to return my rifle to Smith and Wesson. Fortunately, they offer a limited lifetime warranty. They went ahead and replaced the faulty bolt carrier group, including the extractor. 

Once I got it back, I hit the range again. And let me tell you, the change was like night and day. No more feeding issues. Don’t hesitate to use that warranty if you’re facing this issue. 

Smith and Wesson will sort you out, and you’ll be back to a smooth shooting experience in no time.

3. Hammer Issue

Let’s talk about a rather unnerving problem I encountered: the hammer issue. Picture this—you’re at the range, you take aim, squeeze the trigger, and… nothing. The gun just doesn’t fire. Now that’s a downer. 

After some sleuthing, it became evident that the issue was with the hammer. The darn thing wasn’t cocking when the cartridge was discharged. 

In simpler terms, the bolt would engage, but the hammer just wouldn’t do its part. It’s frustrating, especially when you’re trying to keep your focus on the target.


The fix? Replacing the hammer. I watched a helpful YouTube video on how to do it (check out “Inserting the Hammer Trigger Pin”). The process involves inserting a new hammer trigger pin after placing the trigger into its proper position. 

It sounds complex, but it’s straightforward. Once everything was in place, I went back to the range for a test run. Guess what? Problem solved! The hammer cocked perfectly every time, making the whole shooting experience enjoyable again. 

So, if you’re facing this issue, a hammer replacement should do the trick.

4. Problem with the Firing Pin

Alright, next on the list is a firing pin issue. This is another showstopper that’s equally vexing. You’ve got your target lined up, and you’re ready to fire, but then—click. That’s right, a hollow, meaningless click. 

There was no bang, no recoil, just disappointment. This problem usually sneaks up on you, and when it does, it’s quite the buzzkill. 

It disrupts your whole shooting rhythm and makes for a less-than-ideal day at the range, to say the least.


So, what did I do to remedy this issue? After trying to troubleshoot myself to no avail, I decided it was time to get professional help.

I returned my M&P 15 Sport 2 to Smith & Wesson for replacement. And you know what? They took care of it. Got it back, went to the range, and it was like a whole new gun. 

No more frustrating clicks, just the satisfying sound of rounds going off. My advice: if you’re dealing with this, don’t hesitate to send it back for a replacement. It’ll save you time and a lot of headaches.

5. Issue with the Tumbling Bullets

Alright, let’s tackle another perplexing issue: tumbling bullets. Yeah, you heard it right. The bullet, instead of flying straight, starts doing somersaults in mid-air. 

This might not seem like a big deal at first, but trust me, it’s annoying and can mess with your aim. I noticed this happening more frequently the more rounds I fired. 

At first, I thought it was just me or maybe the wind, but nope—it was the rifle acting up.


So, how do we fix this? I decided to check inside the barrel for copper fouling. I used a chemical copper remover to clean up the gunk that had accumulated from frequent firing. Did it make a difference? Absolutely. I also used a bore guide during the cleaning process to be thorough. While switching to different ammo seemed like it helped temporarily, cleaning out the copper was the long-term fix. No more tumbling bullets, and I got my accurate shots back. So, if you’re having this issue, a good barrel cleaning could be your simple fix.

6. Trigger Issue

Let’s dive into another issue I’ve faced—the trigger getting stuck. Yep, just like it sounds. You go to pull the trigger and find it’s not budging. It’s an unsettling feeling, and it could let you down in a pinch. 

I noticed this happening right off the bat as soon as I took my new M&P 15 Sport 2 to the range. It seems like the trigger has these small imperfections, or “burrs,” causing it to catch now and then.


The fix? Well, it’s all about breaking in the rifle. I fired off a good 200 to 300 rounds just to work the kinks out. 

And don’t forget about proper lubrication; a well-lubed trigger is a happy trigger. Just consult your user manual to find out where to apply the grease. 

After taking these steps, my trigger issue pretty much vanished. So, if you’re wrestling with a sticky trigger, try these tips.

Final Verdict

Alright, folks, we’ve been through the ins and outs of the Smith and Wesson M&P 15 Sport 2, haven’t we? Now, it’s time to get real. No gun is perfect; this one certainly has its share of issues. From extraction problems to finicky triggers, it’s been a ride sorting out each glitch. 

But here’s the kicker: Most of these issues are fixable, either by you or with a little help from Smith and Wesson’s warranty service. 

So, is the M&P 15 Sport 2 worth it? Once you’ve tackled these issues head-on, you’re left with a reliable, affordable, and downright enjoyable firearm. 

So get one, tune it up, and let the bullets fly.


Is the M&P 15 Sport a good gun?

Yes, it’s affordable, reliable, and generally a solid AR-15 option.

What is the twist rate on a S&W M&P 15 Sport II?

It has a one in nine-inch twist rate, ideal for stabilizing 55-grain M193-type ammo.

Can you shoot .223 in a M&P 15 Sport 2?

Yes, it’s chambered in 5.56 NATO/.223 REM, making it versatile and reliable.

Is the M&P Sport 2 accurate?

Yes, it offers good ergonomics, accuracy, and reliability for the price.

One Request?

I worked hard on this post to help the shooters community. it would help me a lot if you consider sharing it on social media network

BecauseSharing Is Caring..

Because Sharing Is Caring..

Photo of author


I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

Leave a Comment