Upgrade your M4/M16 to a full metal body with this kit from CYMA. Built from aluminum for a lightweight yet durable design. This is a complete upper and lower receiver for TM compatible M4/M16
The CYMA M4 ALUMINUM UPPER & LOWER RECEIVER SET is far and away, one of our most popular items. People can't seem to get enough of it.
Inventory Last Updated: Nov 10, 2026
Inventory Last Updated: Nov 10, 2026