Aero Precision AR-15 Atlas R-One Handguard Features The Aero Precision Atlas R-One handguard is machined from 6061-T6 aluminum and part of Aero s R-ONE line which is specifically engineered with reduced size and weight for lightweight AR-15 builds. The proprietary ATLAS attachment system short for Aero Taper Lock Attachment System uses two mirrored tapered locking nuts that distribute clamping pressure evenly around a custom engineered barrel nut using a turnbuckle screw. This even pressure design avoids the distortion that other handguard attachment methods can introduce during installation keeping the handguard straight and true. A ratcheting detent further secures the handguard in place while also providing positive registration so installers know it is properly seated. At 4.8 inches in length with a 1.5 inch diameter this handguard keeps a slim compact profile while remaining free floating for improved accuracy potential. A full length top Picatinny rail runs the entire length of the handguard for mounting optics or other accessories and all mounting hardware is included with purchase. The handguard is designed to match seamlessly with Aero s own M4E1 threaded upper receivers while also working with any mil-spec AR-15 upper receiver though it may not fit billet uppers due to indexing tabs. Weighing just 3.9 ounces the Aero Precision Atlas R-One Handguard is a lightweight precision engineered option available for sale at GrabAGun. Aero Precision AR-15 Atlas R-One Handguard Specifications Manufacturer: Aero Precision Model: Atlas R-One Series: Handguard Compatible Hosts: AR-15 / Aero Precision M4E1 Color: Black Finish: Anodized Style: M-LOK Length: 4.80 Diameter: 1.50 Free Floating: Yes Includes: Mounting Hardware Weight: 3.90 oz Available At: GrabAGun