Key Benefits Universal 20 mm rail compatibility: fits any standard 20 mm rail system, with adapters available for 1/2 inch to 1 inch barrel diameters, giving broad mounting flexibility. Durable allmetal construction with light weight: built to endure demanding use while minimizing added weight. Protective friction and surface care: fabric lining increases friction to prevent accessory movement and protects mounted items from wear. Precise sizing and adjustability: depth 20 mm; rail mounting height 25 inches; barrel mounting height 75 inches; width 5 inches; adjustable range 2030 mm to fit multiple setups. Easy, toolassisted installation: includes a wrench and is designed for straightforward mounting directly on the barrel. compatibility with accessories: ideal for mounting flashlights, sights, bipods, and other 20 mm rail accessories. Specifications Rail compatibility: standard 20 mm Picatinny/20 mm rail; adapters for 1/2' to 1' barrels Construction: durable allmetal Lining: fabric for increased friction and accessory protection Depth: 20 mm Rail mounting height: 25' Barrel mounting height: 75' Width: 5' Adjustable: 2030 mm Maximum barrel outer diameter: 21 mm Installation: easy, includes a wrench Use scenarios Scenario 1: Mounting a flashlight or optic on a rifle or carbine that uses a 20 mm Picatinny rail. The unit provides a secure hold with a protective lining to prevent scratches, while the included wrench simplifies onbarrel installation. Scenario 2: Attaching adaptors to barrels with diameters ranging from 1/2' to 1' for accessory placement. The adjustable 2,030 mm range accommodates different barrel configurations without sacrificing stability. Scenario 3: Quick deployment of bipods or laser sights on field or range firearms. The robust allmetal construction ensures reliable performance under movement and recoil, while the frictionenhancing lining protects your gear during dynamic use.