The Armaspec ECB Kit is a complete magazine release upgrade for AR-pattern lowers: the Enhanced Combat Button, a magazine catch and the spring. Swapping all three at once gives a matched set and a fresh spring. The red finish adds a touch of color to the receiver.
- Brand: Armaspec
- Type: Magazine release kit
- Includes: button, magazine catch, spring
- Color: Red
- Manufacturer part number: ARM204-RED
