I too purchased a M&P 15 Sport with the Magpul front sight, searched through the box trying to find the tool referred to in the manual, and found nothing. Called S&W customer service, got a hold of a very nice gentleman who said he had one they would send me. While I appreciate the friendly, timely response the "key" got here today and it doesn't fit... It won't even fit in between the outside posts as diameter is too large.
I will call again and request another one that fits.
Regardless of whether you can use a bullet, a nail, or any other pointed object, the manual says to use the tool and they failed to provide one. And even when you call to request one and tell them specifically which model it is for they don't ship the one you need.
This is not rocket science, change the manual or provide the correct tool, easy. It's a little piece of plastic that probably costs less than a nickel to manufacture, how hard could it possibly be to put one in the box? Instead they waste the customer's time, the customer service agent's time, pay someone to package and ship it, and then pay the shipping to send you the wrong part, so you can waste your time, again, the customer service agent's time, again, pay someone to package and ship it, again, and pay the shipping on it, again...
For a nickel's worth of plastic that should have been in the box in the first place...
