These excerpts were from a Guns & Ammo review of the M&P
Of the many things I've never expected to hold in my hands during this lifetime (along with certain parts of Uma Thurman), a Smith & Wesson-manufactured AR-15 rifle would rank pretty high on the list. But that's what I'm holding right now, and it's a very impressive piece of work.
The "M&P" stands for "Military & Police," and it puts these two new 5.56mm (.223 Remington) 16-inch semi auto carbines square in the forefront of Smith & Wesson's continuing century-plus tradition of duty-oriented M&P firearms.
Talk to the guys at S&W about the M&P15, and the word you hear over and over is "reliability." "Our intention is to produce the absolute most reliable and duty-ready AR-15 you can find, right out of the box, with all the best features and accessories already in the package. We examined and tested literally every AR-15 component in existence before selecting what we were going to put in these guns." "These guns just run and run."
Plus, I might add, they look really cool.
The optimum twist rate for your own AR-15-style rifle will depend entirely on the bullets you shoot and what you want them to do, and 1:9 is the most popular all-purpose twist for the .223/5.56mm cartridge. It will shoot well with bullets anywhere from 40 to 75 grains in weight. It also wears better than faster twists. At typical .223 velocities, a 1:9 twist will stabilize bullet lengths equivalent to lead-core bullets of 40 to 73 grains in weight. In terms of accuracy, 1:9 bores, even basic mil-spec chrome-chambered and barreled, can attain one to two MOA out to 300 meters or farther provided the rest of the gun is put together like it should be. The M&P15s clearly are.
Our M&P15 rifles arrived in Illinois in the middle of last December's bitter cold snap, with midday temperatures not rising above 10 degrees and a continuous 25mph north wind blowing sleet and snow. What better conditions to see whether S&W's bold reliability claims were worth listening to? After making sure that both M&P15s were properly "winterized" by treating their internal parts to nothing but a very light wiping with a very lightweight gun oil, I gathered every variety of .223 ammunition I could drag out of inventory and embarked on a function review with 38 different individual loads in all.
Suffice it to say that after nearly 4,500 rounds of mixed commercial ammunition of every grade and every bullet weight you'd want to put through an AR, there had been exactly zero stoppages of any kind, reliable indeed.
I fired the M&P15 Standard model (with Leupold VX-III 6.5-20X scope) at both 100 yards and 200 yards.
I also fired the best-performing 200-yard load at 440 yards as well (440 yards being the distance from fence line to fence line across a 40-acre field). My thinking was that there was no need to go past 100 yards with the tactical optic, but with the high-magnification varmint scope I could easily see from the 200-yard results whether my hopes for the Standard gun as a coyote tool would be realized--and they were, in spades.
Both guns passed their tests for service, duty and personal-defense qualities with flying colors. But three of the six review loads, all in the midrange of bullet weights, also held within one MOA out at 200. And the best of them proved the same to a full quarter-mile. That's predator-control quality--pick your species. I just love a good quarter-mile coyote gun. Who would have thought I'd find one in an AR-15 type wearing a Smith & Wesson label?
For those of you who don't know who Uma Thurman is: