M&P 10 questions

[grubbylabs]

So I have settled on getting the M&P 10. But I would like to change out the hand guard, I would like something like this,http://www.cheaperthandirt.com/product/ARR-434 but I have no idea which one to order, so how do I find out?

 

[dvdcrr]

Your best bet would be to contact Troy and specifically mention the mp10. The only ones I see on your link that would work would be the longer two but they would require a lopro gas block. I believe you need a 9" midlength handguard to match the factory gas block. My mp10 accessory book mentions the apex.