Aero Precision APAR538105M46: The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. M5 Assembled Upper Receiver ATLAS S-ONE Handguard of choice 22\" 6.5 Creedmoor SS Barrel, Rifle Length Low Profile Gas Block and Rifle Length Gas Tube Product comes assembled