RISE Armament Stinger AR-15 Slimline Handguard 15in Black Anodized. The RISE Armament 15-inch free-floating M-LOK handguard allows attachments without the bulk and a short Picatinny rail system enables additional accessories. For use with low-profile gas block. Barrel nut and hardware included. Specifications for Rise Armament Stinger Handguard: Manufacturer: RISE Armament Color: Black Finish: Anodize Fabric/Material: 6061-T6 Aluminum Gun Model: AR-15 Gun Type: Rifle Handguard Length: 15 in Gun Rail: M-LOK Weight: 10 oz Condition: New Included Accessories: Barrel nut locking plate screws Inner Diameter: 1.35 in Outer Diameter: 1.55 in Mount Type: Picatinny Attachment Type: Picatinny Quantity: 1 Features of Stinger Handguard: Lightweight Slimline profile with comfortable center grip point Designed for free-floating barrel for improved accuracy Accessory-friendly Allowing numerous customization options M-LOK-compatible with Picatinny upper rail system Anti-rotation and anti-slip technology Precision CNC machined from 6061-T6 billet aluminum MIL-A-8625F Type III Class 2 hard anodized flat black finish Includes steel barrel nut and hardware 15 inch in length Inside diameter: 1.35 inch Unit weight: 12 oz Package Contents: Rise Armament Stinger Handguard RISE Armament RA-902-150-BLK-G2: Stinger AR-15 Slimline Handguard 15in Black Anodized