The Atlas R-One is the latest innovation in the Aero Precision handguard collection, offering a perfect blend of size, weight and performance. Machined from 6061-T6 aluminum, the R-ONE handguard is specifically engineered for lightweight builds without compromising on durability. The proprietary Atlas attachment system ensures a secure and reliable mounting platform while maintaining a sleek and slim profile. With the strength and stability that Aero Precision is known for, the R-ONE handguard provides exceptional performance, making it the ideal choice for those seeking a high-quality, lightweight solution for their firearm build. Full top picatinny rail for optional attachments, providing flexibility to add various accessories to your firearm Features a quick disconnect sling socket at the 3, 6 and 9 o'clock positions for versatile sling attachment Compatible with low-profile gas blocks, making it suitable for compact builds or for users who prefer minimalistic setups The inside diameter measures 1.3 inches for a precise fit The outside diameter is 1-1/2 inches for a perfect fit in standard applications Compatible with Mil-Spec AR-15 upper receivers and barrels, ensuring a secure and reliable fit with standard AR-15 components