You can find the Midwest Combat Rail M-LOK 9.5" Free Float Handguard Black here.
The Midwest Industries Combat Rail Free Float M-LOK Handguards are designed with a one piece free float design that is made of extremely durable 6061 aluminum and hard coat anodized. The top picatinny rail has T markings for accessory locations. The seven other side have M-LOK accessory slots along the length of the handguard. Both sides of the handguard have built in QD sockets for QD sling connectors. The Combat Rail has integrated anti-rotation tabs to interface with any Mil-Spec forged or Mil-Spec dimensioned Billet upper receiver (see note below about Billet receivers). Includes one five slot M-LOK polymer rail section, installation hardware and barrel nut wrench.

Made in the USA.

Inside Diameter: 1.3"
Outside Diameter: 1.5"
Length: 9.5"
Weight: 8.3oz installed
Color: Black