The Rock River Arms 20in Predator HP Upper Post was made to be the best item for any person trying to find a top quality choice.. These AR15 Upper Receivers from the skilled product specialists at Rock River Arms are fashioned working with long lasting and reliable components, in order to provide you with product that will be beneficial for a long time. Designed utilizing some of the very best available substances and design, these particular AR15 Upper Receivers through the product professionals at Rock River Arms can last an incredibly lengthy time. Rock River Arms has been making high quality merchandise for a very long time, and the Rock River Arms 20in Predator HP Upper Post is their way of revealing just how much they are concerned. Right here at OpticsPlanet, we ensure that it is our obligation to get the perfect product for all your specifications, and showcasing the Rock River Arms 20in Predator HP Upper Post is one thing that we're delighted to offer. Specifications for Rock River Arms 20in Predator HP Upper Post: Manufacturer: Rock River Arms Caliber: 7.62x51mm NATO Overall Length: 30 in Barrel Length: 20 in Barrel Profile: Standard Gas System Length: Mid Length Barrel Twist Rate: 1-10 Threads per Inch: 5/8x24 Handguard Type: Free-Float Muzzle Device: RRA Operator Brake Color: Steel Fabric/Material: Stainless Steel Handguard Length: 17 in Gun Rail: Full Top Rail Gun Model: Universal Weight: 6 lb Magazine Included: No Package Contents: Rock River Arms 20in Predator HP Upper Post Bolt Carrier Group Charging Handle Assembly