V Seven KMR Clamp Blocks Sold In Sets Of 2 Titanium DLC Finish/Black. The clamp block secures the barrel to the upper receiver during any maintenance or installation and allows the work surface to be smooth and flat for maximum access and support. The set of two clamp blocks is ideal for clamping your barrel nut to ensure a uniform torque and maximum support to the barrel nut clamps. Constructed from Grade 5 Titanium and with an Ionbond black finish the clamp block will keep your work secure during any modifications or installation. Specifications for V Seven Titanium Kmr Clamp Blocks: Manufacturer: V Seven Color: Black Gun Model: AR-15 Features: Constructed From Grade 5 TitaniumIonbond Black Finish Set Of 2 Package Contents: V Seven Titanium Kmr Clamp Blocks What firearm models does the manufacturer say V Seven Titanium Kmr Clamp Blocks is compatible with? The manufacturer suggests that V Seven Titanium Kmr Clamp Blocks is compatible with AR-15V Seven KMRCB-BLK: Barrel Nut Clamp Block Set KMR/Alpha/MCMR Rails Grade 5 Titanium DLC Finish Black