OPEN BOX / BLEMISH These items are discounted because they have been used or have blemishes in the finish. Other than the finish these items are fully functional. Our two piece drop-in carbine length AR-15 quad rail handguard is a quick and easy install on any carbine length AR-15 rifle platform in minutes. Crafted from aircraft grade aluminum, both sturdy and lightweight. Standard picatinny rails allow the mounting of tactical accessories such as bipods, flashlights, and sights. Available in black and flat dark earth.Before purchasing and installation, we recommend viewing our quad rail FAQ and installation guides. Includes: Top Rail section, Bottom rail section, 4 Allen Screws, Allen wrench Materials: 6061 Aluminum Alloy Compatibility: AR-15 Rifle with delta ring and front end cap installed Weight: 12 oz Length: 6.7 in Height: 2.5 in Internal Diameter: 1.7 in Color: Black or Flat Dark Earth