Has anyone used them? How are they for durability?

I am interested in running a 10" handguard over an 8.5" barrel, eventually w/a suppressor, so the supposed heat dissipating qualities of carbon fiber of aluminum would be nice.

Frankly, I'd prefer the Midwest Industries handguard, but they're out of stock everywhere and have been for a while.

Hit me on my email. I have one in 6 inch if you want to check it out.

I got a 8” one on my 6” barrel. I don’t run the gun super hard, so I can’t speak too much to durability, but mine is fine. Best part is weight, the MPX is a touch front heavy, but it balances perfect with the Lancer hand guards. Add the ability for a longer hand guard to keep your off hand further out, and it is win-win.