For example, You can fits on the M4 RASII.

For example, You can fits on the MINIMI RAIL TOP COVER.

The ring body has a build-in insulated spear battery.

Weight: 100g
Color: Black
Material: Steel / 6061 Aluminum Alloy / 100% CNC Made

Item No.: MOUNT-01
Suggested Retail Price: USD 90.00