Aero Precision APSL100504: Literally dozens have asked for it- and Aero Precision is here to deliver. Introducing their limited run of purple anodized parts and components. Perfect for your next 3 Gun build, or just something a little more flashy. This part is finished with a Type 2 purple anodize that provides a large variety of contrast in different lighting conditions. FEATURES: 1pc free float design Built in anti-rotation tabs Scalloped rails Continuous top rail 1.72\" inside diameter (from barrel nut cut to forward end) fits most muzzle devices and 1.5\" suppressors 1.78\" inside barrel nut cut area diameter Compatible with low profile gas blocks Gen 2 Feature - Quick disconnect sling socket at the 3, 6 and 9 o\'clock positions Gen 2 Feature - Additional milling along flats to aid with gripping and add visual appeal Gen 2 Feature - New profile for the continuous picatinny top rail Does NOT include the barrel nut *Please note - This handguard is specific to the AR15/M4E1 platform. It is not compatible with the M5 .308/M5E1 platform.