Rocket Airsoft CNC Aluminum Airsoft AEG Gearbox Cylinder Head w/ Double O-ring & Pad

"This is an excellent cylinder head for its price. It's sturdy and will improve your cylinder compression. Mine needed to be pressed on, and it took a small amount of rubber off the outer seal, but it'll never come off or leak air. I put it on an M4 and I'm about to get another for an AK. I changed a lot of parts on my M4 all at once, so it's hard to say exactly how much this head changed. But, for what it's worth, my gun consistently hits bull's-eyes at 200+ feet.

"Seals very well, im using an m160 spring and have no issues. Fits my nozzle and cylinder perfectly. Been using for about 10k rounds and the rubber pad is still in good shape.

"Really good cylinder head. Seals good in a lot of cylinders that I’ve put it in. I’ve gotten best results from Lonex cylinders, though I’ve found Lonex cylinders to have tighter tolerances than a lot of other. I used to use Lonex cylinder heads but these Rocket ones have better fitment and are cheaper. The best V2 cylinder head you can get.