Why is the Sport so great?
I will just give you a quick run down of the Sport and why it is such a great gun.
1. The barrel is a 5R rifled barrel.
5R barrels are known for their accuracy regardless of caliber. For whatever reason they just shoot and shoot well. It also increases the velocity by virtue of how the rifling is laid out.
2. The barrel is Melonite treated.
Melonite treatments are far better than any chrome lining as far as hardness and durability. It also offers an exception amount of corrosion resistance. It is more than just a surface coating like chrome, it actually treats the metal and goes subsurface.
3. The bolt is properly heat treated.
This is very important for the long term durability of the firearm. It ensures the headspace will remain in spec longer than those bolts that are not heat treated properly. Poorly heat treated bolts will either wear prematurely or break from being too brittle.
4. It has a barrel twist rate of 8
This twist rate allows you to fire the heaviest bullets that can be fed from a magazine, up to 80 grains. And because it isn't a 7 twist (like most others out there) you can also fire the lightweight varmint style bullets without fear of the jackets seperating.
5. It comes ready to fire.
It comes with a Magpul rear sight while most competitors, even those 100's of dollars more expensive, do not. The sights have been proven for several years now both by those in harms way as well as the weekend shooter. It also includes a Magpul magazine which has also been proven for seveal years now.
6. It is built to the same specs as all other AR's
This means you can upgrade and swap parts to build a gun that suits your wants or needs. And because it is an AR most of the work can be done by the owner and if it is a milspec part it WILL fit.
7. The price
In reality if any other maker were to offer the same features as the Sport has they would be asking 100's of dollars more. The 5R barrel and Melonite treatment were once only offered on high end guns. And included in the price is a warranty that is among the best in the industry.
You cannot go wrong with the M&P Sport and they are hard to find because they are such a great gun.