Lonex POM Expanding Piston Head for Standard Airsoft AEG Gearboxes

"Fantastic performance when using with an Angel Custom Kratos piston and Lonex POM nozzle. I use all three in a G&G F2000 (contrary to popular belief the stock F2000 piston head is not proprietary, and the air nozzle is AUG spec/length), and it's pretty crazy to see how tight of an airseal this gives me, I probably could challenge DMRs with my F2000 now.

"Fit my stock V3 gearbox LCT cylinder and worked just fine with good shot consistency. Like with anything LCT, it will probably last me a lifetime.

"This Lonex, SHS/Rocket, and RA are my favorites. Their o-rings are a good fit for most Cylinders I have put them in and the porting is usually good enough to create perfect seals. I'd say Lonex is right there with RA for how many different cylinders they work in. SHS/Rocket have only seen 1 or 2 that didn't seem to match the cylinder and swapping the o-ring for a different one fixed that.

The POM in each of those brands also seems to be pretty much equal and I haven't had any break. Definitely prefer POM over Al in my builds of 300fps - 450fps.
Can't go wrong with this!