Action Army AAP01 Assassin Gas Blowback Exclusive CNC Aluminum Precision Hop-Up Chamber.
By updating to a drum-type adjustment method, more precise HOP adjustment is possible.
Furthermore, the adoption of a new HOP arm allows for even adjustment of the HOP force.
*Inner barrel is not included.
*Aftermarket inner barrels do not have side notches, so you may need to adjust the length of part number 9 (set screw).
The company's inner barrels [D01-042] and [D01-043] are side notched and ready to use.
*There are small parts in a transparent bag inside the package.
Please check whether there are any missing parts before installing.
We will not accept any complaints after the product has been opened.