We put together of list of the 12 best Smith Wesson M&P 15 Sport 2 upgrades that will significantly improve the rifle's handling, optic mount height, recoil characteristics, and overall performance. 

Our 10+ years of hands on experience allowed us to sort out all the practical upgrades that you should check out, so you can stay away from ineffective parts that do nothing but burn through your wallet.

Let's take a look

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Best Smith and Wesson MP15 Accessories



  • Faster Reload
  • Reduces Recoil
  • Improved Trigger
  • Improved Handling
  • Increased Service Life
  • Improved Ergonomics
  • Improved Lower Durability
  • Improved Aiming

Radian Raptor Charging Handle - Better Pull Leverage

radian raptor ambi charging handle

I upgraded my M&P 15 Sport II with the Radian Raptor charging handle and I have never went back to the factory charging handle. This handle's large AR15 latch makes clearing jams a breeze compared to the standard handle.

When I'm operating the rifle, the smoothness of the bolt carrier group pull is noticeable, especially since I've got big hands. It feels fluid and fast, whether I'm using my strong side or support side.

Another thing I appreciate is how it reduces shear stress on the upper receiver. The large latch ensures the charging handle bar doesn't scrape against the top receiver, which is a huge plus.

The 7075 T6 construction is solid. I've put it through numerous high-volume BCG charging cycles, and it's holding up like a champ.

And the colors. There's a variety to choose from - red, black, clear anodized, FDE, Radian brown, grey, OD, and tungsten grey. It's nice to have options that match my style.

Lastly, if you're using a suppressor, the Raptor SD is perfect. Its ported shaft redirects hot gas down and forward, away from your face, which is a thoughtful design for suppressed shooting.

Overall, the Radian Raptor is not just an upgrade; it's a vital addition for any serious shooter.

Magpul BAD Lever - Cuts Down Reload Time

magpul bad lever

I recently upgraded my M P Sport 2 with the Magpul battery assist device, and it's a game-changer! This device is a must-have for anyone looking to enhance their bolt actions and speed up their reloads.

First off, I noticed a huge difference in reload speed. The battery assist device extends the bolt release paddle to the right side of the rifle. This design is super handy because it lets me use my trigger finger to operate the bolt release while I'm in the ready position. It's like I can reload way faster now!

Another thing that really impressed me is how it improved my manual of arms. It's way easier and quicker now to manipulate my weapon and clear any malfunctions. The efficiency boost is significant.

I can also lock the bolt to the rear with just my index finger, without even taking my hand off the pistol grip. This one-handed operation feature is incredibly convenient and makes handling my rifle so much smoother.

scalar works leap night vision height aimpoint micro mount

When I use the Scalarworks LEAP 1.93" mount, I notice it keeps my spine neutral. This setup makes aiming with both eyes open more comfortable. It's especially helpful because it lets me place the optic more intuitively. This ease of use is a big plus when I'm using night vision devices. Another great thing is that it cuts down on neck strain in different shooting positions.

To sum it up, I don't have to press my cheek against the stock or bend my neck in an uncomfortable way. This makes my shooting experience much more enjoyable.

1.93" optic height is available for Aimpoint Micro footprint optics.

Magpul MOE SL MLOK Handguard - Mounts More Accessories 

mp15 with magpul moe sl handguard

If your MP15 already has this, check out free float rail system here

I've found that you don't need an overly fancy and expensive handguard for a budget M&P 15 build. A high-quality option that fits the bill is the 2-piece drop-in Magpul MOE SL handguard. It easily attaches to the delta ring, saving me from spending a lot of money.

One great feature is the cutout for the A2 front sight. With my MP15, I don't need to remove the delta front sight; the Magpul MOE SL top rail piece accommodates it perfectly.

It's also M LOK compatible, which is super convenient. I can mount any M LOK accessories like lights, lasers, and grips at the 2, 6, and 10 O'clock positions, giving me a lot of flexibility.

Another big plus is its heat resistance. The added riveted aluminum heat shield is a lifesaver, protecting my hand from the barrel heat. This makes my shooting experience heat safe and more comfortable.

Magpul CTR Stock - No Wobble Buttstock

magpul ctr stock

I really like the Magpul CTR buttstock, also known as the Compact/Type Restricted buttstock. It's got everything I need without any unnecessary extras. Its simple yet attractive design is a big plus for me. This stock is the best choice for a 6 position length of pull buffer tube because it eliminates that annoying wobble and stabilizes my M&P15 perfectly.

Another thing I appreciate is the wide range of colors it comes in. This variety lets me match it with my tactical preferences easily.

To sum it up, the Magpul CTR buttstock makes my M&P15 low drag and snag-free, which is great for fast action sporting. It transforms the rifle, making it much more efficient.

Also, the added sling attachment points are super handy. I can use any push-button QD sling configuration I like, which gives me a lot of flexibility in how I carry and use my M&P 15 Sport 2 rifle.

Surefire MB566 Muzzle Brake - Mitigates Recoil

surefire mb566 muzzle brake

I decided to switch out the plain A2 birdcage muzzle device for the Surefire MB566 muzzle brake, and what a difference it made! Once I attached it to the factory M&P15, my shooting experience improved dramatically, especially when it came to fast firing rate accuracy.

The biggest change I noticed was the significant reduction in muzzle flip. This really helped me get my follow-up shots on target much faster. Plus, the brake does a great job of minimizing side blast and reducing the rearward concussion effects for me as the shooter.

Another great feature is its compatibility with the Surefire Suppressor. It has multiple bearing surfaces, which ensure superior alignment of the suppressor can. This makes it not only a high-performance upgrade but also versatile and user-friendly.

BCM Gunfighter Grip - Better Grip Angle

bcm vertical fore grip

I've got to say, the BCM Gunfighter grip is my top choice for a vertical angle grip on my M&P Sport II rifle. When I'm using modern techniques in gunfights, it's crucial to aim and shoot accurately while directly facing my target.

Attaching this grip to the handguard has boosted the ergonomics of my grip. It makes driving the rifle faster to the target much easier. Plus, I can naturally grip the gun and operate a weapon light simultaneously, which is super convenient.

Using a C clamp grip on the handguard with this grip has also helped me reduce rifle sway. It provides better grip leverage, making it easier to maintain control.

Available for KeyMod, 1913 and MLOK

Check out other AR15 Grips Here

Real Avid Carbon Boss - All-in-one Cleaning it

I got this cleaning tool because, like many AR15 owners, I wanted something that could thoroughly remove carbon from my gun. The Real Avid Carbon Boss turned out to be a fantastic cleaning kit for several reasons.

First off, it's an all-in-one package that lets me deep clean every part of the AR15 bolt carrier group. It's amazing how it removes carbon residue from 13 different surfaces, including the bolt cam pin, bolt lug, firing pin, and more.

The toolset is impressive: it has a rotating pin punch, cotter pin puller, interior and exterior bolt scrapers, bolt lug scraper, bolt cam pin scraper, small and large firing pin scrapers. Plus, there's an embedded 360-degree phosphor bronze bolt tail brush, a replaceable rotating multi-surface bolt brush, bolt face scraper, bolt carrier scraper, and firing pin face scraper.

What really makes it user-friendly is how I can lock each of the fold-out tools in place with liner locks or detents. And the Carbon Boss has labeled tools, which helps me get the job done quickly and accurately. It's a real game-changer in gun maintenance for me.

KNS Anti Walk Pins Gen 2 - Better Trigger Group Retention

KNS Precision AR15/M16 Gen 2 MOD 2 Non-Rotate Trigger/Hammer Pins .154 Diameter-Stainless Steel, NRTHPMOD2-154-SS

Have you ever been frustrated with trigger pins sliding out of your Smith Wesson M&P 15, especially after rapid firing or due to a loose fit? Well, I found an affordable solution that prevents hammer and trigger rotation. The best part? It doesn't require any modifications to the receiver!

This kit comes with a .154 diameter, perfect for standard AR15 lower receivers. The installation process is super quick and easy. It includes new threaded pins to replace the factory ones. All I had to do was lock them in place, and that's it!

The performance is rock solid. I can shoot as much as I want without worrying about pins falling out in the field. This has been a huge relief for me knowing that the steel pins aren't egg shaping the holes in the lower receiver.

Timney Single Stage Trigger - Smooth Trigger Pull

timney single stage trigger

I highly recommend the Timney AR15 single-stage 3lb drop-in trigger as an excellent trigger upgrade for a stock M&P15 Sport 2 rifle, especially considering its reasonable price.

The installation process is a breeze. It's a drop-in trigger kit that's very easy to install. Just two trigger pins, and you're all set – no need for any gunsmithing or fitting.

The impact on shooting is noticeable. This single-stage trigger significantly improves the trigger pull, reducing it to just 3 lbs from the original 8 lbs. It also eliminates trigger pre-travel, which results in a faster trigger reset and quicker follow-up shots.

What I find most impressive is the difference in the trigger pull weight. It's so much smoother, making it a lot easier to take long-range shots. This upgrade has definitely enhanced my shooting experience with the M&P15 Sport 2 rifle.

geissele braided super 42 spring

I decided to upgrade the buffer spring in my M&P 15 to get rid of that annoying spring 'twanggg...' sound and to boost its service life and reliability. The Geissele Super 42 Braided Spring with either an H1 or H2 buffer, operates at only around ~35% of its maximum stress load, unlike a standard spring.

Its springs flex separately, much like a harmonic damper and energy absorber. This design helps displace excess energy, preventing spring failure.

It's also really convenient that it fits all standard Mil-Spec buffer tubes, making installation straightforward.

In terms of reliability, the braided wire design significantly improves the weapon's cycling performance. It increases bolt return force, which is crucial for ensuring proper round chambering, especially when dealing with dirt or steel case ammo.

The spring completely eliminates that spring twang sound in the buffer tube. The braided wire maintains spring harmonics inside the buffer tube, making my shooting experience much more pleasant and focused.

Holosun 510C - Fast Sight Picture

holosun 510c

I've found the Holosun 510C to be the best red dot sight option for beginner M&P 15 Sport 2 owners who don't want to spend a lot of money. It's an open emitter red dot sight that offers a large field of view and comes with a protective hood to enhance durability.

The point-and-shoot feature is what I like the most. Wherever I place the dot, that's where my bullet is going to hit. It's parallax-free with unlimited eye relief, allowing me to instantly place the dot on the target while keeping both eyes open.

Another great feature is the Solar Fail Safe. The solar panel not only extends the battery life but also keeps the sight on even if the battery dies. This gives me peace of mind during long shooting sessions.

The reticle is reminiscent of EOTech models. The built-in multiple reticle system lets me switch between a single dot reticle or a 65 MOA reticle, depending on what my shooting application requires.

Its multi-purpose use is another big advantage. I can use it on any firearm, which really shows how versatile this optic is. The improved QD mount with adjustable clamping force means I can easily attach it to any firearm, including heavy caliber centerfire rifles. This makes the Holosun 510C a really practical and useful choice for a wide range of shooting needs.

Also check out our complete best AR15 guide here 


Safety Consideration

  • Always ensure your firearm is unloaded and pointed in a safe direction when installing or adjusting optic riser mounts.
  • Follow the manufacturer's guidelines for proper installation and torque specifications to prevent damage to your optic or firearm.
  • Regularly check the mount's tightness and stability, as recoil and regular use may cause it to loosen over time.
  • Be aware that changing the height of your optic may affect your original zero and require re-zeroing your firearm.
  • The author and website are not responsible for any damages, injuries, or accidents resulting from the use, misuse, or improper installation of the products mentioned in this article.