Tactical Tri-Rail Barrel Mount for 30mm Riflescope Tube 3 Side for Rail 20mm Weaver Picatinny Rail Mount with Spirit Bubble Level 

Specifications:

 Weight: about 105 g

Material: Aluminum alloy

Height: about 62mm

Scope ring size: 30 mm

Fit for：20mm picatinny weaver rail

Center Height: 36mm 

Rail length: 45 mm

Features:

Lightweight, made of aluminum with black anodized matte finish.

Military specification scope mount base

Durable full metal construction

Easy installation (tool included).

Mounts onto 20mm rail.