The PDI Hop Up Chamber for Type 96 airsoft sniper rifle. One of our most popular upgrade parts for the Type 96 gun we sell! An awesome upgrade to any Type 96 Maruzen based rifle - replaces the hop-up chamber in your gun, so you can now use AEG style buckings and barrels. Holy cow! We're proud to offer this incredible hop up part here at Airsoft Atlanta, as one of the few authorized PDI dealers in the world.