- CNC Aluminum Construction 
- Machined From High Density Aluminum Alloy for Maxium Strength 
- Quick Release Thumb Nut allow fast installation & detachment 
- Skeletal Look - All inessential parts has been remove to keep the lightweight 
- Able to hold 4 pcs CR123A / 2 pcs AA Battery 
- Fit all 20mm Picatinny RIS Rail, SIR System, SureFire Weapon Rail System