GHK AR New Simple Quick Adjust HOP Upgrade Kit

Thanks to this new AR HOP Upgrade Kit you can adjust your hop-up very simple and quickly.

Features:

● Includes HOP-UP seat, patented adjustment tool, HOP-UP rubber)
● Material : Nylon
● Easy and quick tuning
● No dismantling handguard
● Generally available on the market GBB inner barrel
● Reliably fixed, not easy to be shaken loose
● For GHK AR GBB all series