The M&P 15 Sport is an amazing little AR 15…
It’s built tough. It’s reliable. It’s accurate, and on top of all that, it’s VERY affordable!
All that being said, there are some areas where it’s a good idea to upgrade the Sport…
And let’s face it, the Sport is a great gun, but the cheap plastic handguard is one of the areas where Smith & Wesson decided to shave a little bit of the cost…
Honestly, I think that’s good thing because it gives you an opportunity to upgrade your handguard, and one of the most popular options is to upgrade to a quad rail…
The only question is… What are the best M&P 15 Sport Quad Rails…?
That’s a great question, and I’m going to answer it today by giving you my list of the Top 5 best quad rails for the M&P 15 Sport…
By the end, you’ll have a solid understanding of which quad rails will work well with your M&P 15 Sport…
And you should be able to determine which is going to work best for you…
Let’s get started!
Best M&P 15 Sport Quad Rails – Top 5 List…
The best M&P 15 Sport quad rail is the Carbine Length Daniel Defense Omega Rail. It’s the best because it’s easy to install and extremely strong and durable. It’s also fairly lightweight for a quad rail, and the slim profile makes it very ergonomic and comfortable in your hand…
Below I’ll give you more detail explaining why I think the DD Omega Rail is the best rail for the M&P 15 Sport 2…
And I’ll also share with you 4 other options that will be a great fit as well.
1. Daniel Defense Omega Rail – Carbine Length (Best Rail For M&P 15 Sport 2)
The Daniel Defense Omega Handguard is a carbine-length, free-float, quad rail system that you can easily install without additional tools or modifications to your AR 15…
Installing the rail takes only a few minutes and can be done with the Allen key wrench that comes with it. On top of that, this rail has integrated swivel mounts with rotation limiters for your QD sling and a continuous top rail…
The Omega Quad Rail is also super durable and strong. It’s CNC machined from aircraft-grade aluminum, anodized with a type 3 hard coat, and designed to work with the gas system of the carbine length AR15 which means it will fit perfectly on the M&P 15 Sport…
In addition, the fasteners are all constructed according to military specifications, and these rails are exceptionally lightweight in comparison to other quad rails…
Last, the DD Omega Quad Rail has a fairly narrow vertical profile and that makes it extremely ergonomic and comfortable in your hand instead of being fat and bulky like some other quad rails…
So all in all, the Daniel Defense Omega Rail (Carbine Length) is the best quad rail on the market because it’s extremely strong, lightweight, easy to install, and comfortable in your hand. On top of all that, it will fit your M&P Sport like a glove.
| Inner Diameter Of Rail (Inches): | Compatible Gun Models: | Manufacturer Warranty: | Quad Rail Weight (Ounces) |
| 1.08 | All AR-15 Carbine-Length Rifles | 100% Satisfaction Guarantee | 7.60 |
Click The Button Below To Learn More About The Daniel Defense Omega Quad Rail:
2. Midwest Industries Drop In Quad Rail – Carbine Length
The Midwest Industries MCTAR- 17 Gen 2 Two-Piece Handguard is a carbine-length quad rail system that will work perfectly with the M&P 15…
Like the Daniel Defense Omega rail, it’s a lightweight system machined from hard coat anodized 6061 aluminum and compatible with round hand guard caps and most direct impingement (DI) gas systems (like on the Sport)…
In addition to all that, the Midwest Industries quad rail is both lightweight and incredibly quick and easy to install, and it also has four QD sockets for push button swivels (for easily mounting slings) and a continuous monolithic top rail to match up with your rifle’s upper receiver…
The design is also very durable and can withstand the recoil of your M&P 15 in any situation that may arise in the field, from hunting to competition shooting…
Last, the Midwest Industries quad rail is a drop-in install rail, which can be finished in a matter of minutes and requires no special tools, and once it is mounted, it gives you a very ergonomic place to keep your hand which will allow you to fire shots from your M&P 15 Sport very comfortably.
| Inner Diameter Of Rail (Inches): | Compatible Gun Models: | Manufacturer Warranty: | Quad Rail Weight (Ounces) |
| 1.30 | Most AR-15/M16 Rifles With Round Handguard Caps | Lifetime Warranty | 7.50 |
Click The Button Below To Learn More About The Midwest Industries Drop In Quad Rail:
3. Troy Modular Quad Rail – Carbine Length
The Troy Modular Rail Forend Handguard is a non-free floating, carbine-length quad rail that you can conveniently install in under two minutes onto your M&P 15 Sport with the drop-in mounting design…
This quad rail can replace all carbine length M4 and M16 plastic handguards, and it’s machined from 6061-T6 aluminum and hard coat anodized according to military standards. In addition to the durability that you get, this quad rail is solid and gives you plenty of room to mount accessories like weapon lights, lasers, and vertical fore grips…
These quad rails also look great on an M&P 15 and can hold several accessories that you can easily install with numbered cross slots on all four sides of the quad rail…
On top of all that, the Troy Quad rail can conveniently take 360-degree push button (QD) swivels which will allow you to rapidly detach and attach your sling of choice, and like I mentioned earlier, the Troy Modular quad rail is exceptionally lightweight so it’s not going to weigh down your rifle and make it heavy and bulky the way some quad rails do.
| Inner Diameter Of Rail (Inches): | Compatible Gun Models: | Manufacturer Warranty: | Quad Rail Weight (Ounces) |
| 1.39 | All AR- 15/M4/M16 Rifles | Lifetime Warranty | 9.76 |
Click The Button Below To Learn More About The Troy Modular Quad Rail:
4. Monstrum Tactical Extended Drop In Quad Rail (Best Budget Option)
The Monstrum Tactical Extended handguard is a drop-in quad rail that provides a high-quality, lightweight, and cost-effective replacement for the plastic hanguards that come on the M&P 15 Sport…
This quad rail is quick and easy to install, and the FSP (front sight post) cutout allows you to mount this extended length rail without having to remove the front sight post that comes on the M&P 15 Sport…
And because you have so much rail space, you can easily mount weapon lights, lasers, and vertical foregrips onto your Sport to really get the most out of your rifle…
On top of that, these quad rails are 6061 Aircraft Grade Aluminum which means you’re getting a high quality and durable handguard, and they come in at a very reasonable price which is not always the case for with high quality quad rails…
Now you do want to be aware that the Monstrum Tactical Extended quad rails is not compatible with every AR-15 (for example it’s incompatible with Ruger AR-556 model rifles). But because the M&P 15 sport has a carbine length gas system and uses a standard delta ring, you’ll be able to easily mount it onto your Sport without any fitment issues…
Last, the Monstrum Tactical Extended Quad Rail does come in black and FDE which is cool especially for a more budget rail option. And I really like the FDE option because, adding a little bit of Tan or FDE can really set your rifle apart and keep your handguard a little more cool in the summer sun.
| Inner Diameter Of Rail (Inches): | Compatible Gun Models: | Manufacturer Warranty: | Quad Rail Weight (Ounces) |
| 1.38 | All AR-15 Rifles with delta ring and front end cap installed | Lifetime Warranty | 18.00 |
Click The Button Below To Learn More About The Monstrum Tactical Extended Drop In Quad Rail:
5. Monstrum Tactical Drop-In M-LOK Handguard (Not A Quad Rail – But A Cool Alternative)
Ok, so the last handguard on my list is actually not a quad rail, but I think it’s a really great option for the M&P 15 Sport that comes in at a really great price. It’s the Monstrum Tactical Drop In M-LOK handguard, and it’s very similar to the Monstrum extended Drop In Quad Rail except it’s more lightweight because of the M-LOK system…
To begin, this handguard is a carbine-length M-LOK handguard that is very easy to install with the drop-in system, screws, and no additional gunsmithing…
It typically takes less than 15 minutes to install, and the process does not require any special tools. On top of that, this extended handguard has a cut out for your M&P 15 Sport’s front sight post, so there is no need to remove your FSP when you install it…
Although this handguard is not a quad rail, it includes two M-LOK to Picatinny rails that you can install on the various M-LOK slots that run all along the rail, and that will allow you to mount weapon lights, lasers, vertical grips and other accessories wherever you’d like to…
In addition to that, the Monstrum Tactical handguard adds a really cool and modern look to your M&P 15 and it’s a really comfortable handguard to shoot with as well. Furthermore, these Monstrum handguards are exceptionally lightweight and durable for pretty much any type of use you need to put them through…
Last, the Monstrum Tactical drop-in M-LOK handguard is available in either Black or Flat Dark Earth colors. And like I said before, I really like that Monstrum offers an FDE option because adding parts of FDE to your gun adds character (in my opinion), and it also helps keep your handguard cooler when your gun is sitting in the summer sun.
| Inner Diameter Of Rail (Inches): | Compatible Gun Models: | Manufacturer Warranty: | Quad Rail Weight (Ounces) |
| 1.70 | All AR-15 Rifles with delta ring and front end cap installed | One-Year Warranty | 12.00 |
Click The Button Below To Learn More About The Monstrum Tactical Drop-In M-LOK Handguard: