ZCI - M4/M16 - Hop-Up Unit

Currently out of stock across all retailers.

Features: Precision CNC machined aluminum construction Anodized finish Durable one-piece design Rotary adjustment dial Part Number Hopup-ZCI-M-278a Material Aluminum Color Blue or Color May Vary ( Usually Red) Manufacturer ZCI Compatibility TM M4/M16 Series AEGs DISCLAIMER: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.