Features: Compatible with outer barrel with internal diameter below 13.5mm. Ultra small 13mm hop up makes it to fit most ccw fire cap flash hiders inner dia above 13mm. Increase accuracy and range. Lower and upper pressure levels are adjustable. With electric tape, it's easy to install and remove. Removable tongue and base plate for easy cleaning.
Specifications: Brand: rizer Front Outer diameter: 13mm Rear diameter: 11mm Length: 35mm Material: high quality nylon Color: black
