Aero Precision M5 ATLAS S-ONE M-LOK Handguard - Uncoated 12.7in Raw - Aluminum. Machined from 6061-T6 Aluminum the S-ONE line of handguards are designed with size and weight in mind providing the perfect handguard for 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. The new Aero Taper Lock Attachment System (ATLAS) is both functional and aesthetically pleasing. It features 2 mirrored tapered locking nuts that provide evenly distributed clamping pressure across a custom engineered barrel nut with use of a turnbuckle screw. A ratcheting detent further secures the design while providing positive registration during installation. By design the even pressure of the ATLAS system avoids distortion of the handguard often seen with current applications during installation. All hardware mounting parts are included with the purchase of an ATLAS Handguard. Specifications for Aero Precision M5 ATLAS S-ONE M-LOK Handguard - Uncoated: Manufacturer: Aero Precision Finish: Uncoated Fabric/Material: 6061-T6 Aluminum Gun Make: AR Platform Gun Model: M5 Handguard Type: M-LOK ATLAS S-ONE Condition: New Inner Diameter: 1.3 in Outer Diameter: 1.5 in Mount Type: M-LOK Country of Origin: USA Features of Aero Precision M5 ATLAS S-ONE M-LOK Handguard - Uncoated Front and rear picatinny rail Eliminated center of top rail for weight reduction Indexing grooves in 12:00 position for positive grip control Quick disconnect sling socket at the 3 6 and 9 o'clock positions Compatible with low profile gas blocks 1.5in Inside diameter Compatible with AR308 upper receivers and barrels NOT Compatible with M5E1 Enhanced Upper Receivers Package Contents: Aero Precision M5 ATLAS S-ONE M-LOK Handguard - Uncoated Aero Precision APRA538104MA: M5 ATLAS S-ONE M-LOK Handguard - Uncoated 12.7in Raw - Aluminum