Poseidon Punisher 9" PDW AEG Airsoft Rifle w/ Medusa Mosfet stock The hop up is fully

The hop up is fully adjustable with a side lever switch near the front handguard

not the bottom for easier access

There's guides and videos on how to do all this

You can also use this to psych out your opponents and sneak up on them

Includes rubber hop up unit installed

Poseidon Punisher 9" PDW AEG Airsoft Rifle w/ Medusa Mosfet stock The hop up is fullyThe Poseidon Punisher 9" PDW AEGR Airsoft Rifle is for players who demand the best class, versatility in tactics, and cutting edge features. Strongly and precisely constructed, this compact AEG rifle performs great on fast paced CQB scenarios to mid range skirmishes. At the heart of this rifle is a Medusa App Based Programmable MOSFET for customized trigger response and firing modes, all done with a user centric perspective for better performance.