Important notice:
Please DO NOT use any kind of organic solvent (e.g. acetone, IPA) to clean the inner parts of the cylinder. These solvents could very likely damage the polymer piston.
 
The new MK3. is now released, which will be fully compatible with Infinity version!
 
New Feature of MK3.:
Removable front cap positioning pins for the Infinity new HOP UP unit
Enlarged groove for the Infinity gearbox
Compatible with pre-2021 systema gear box still

The Mk3. version of HAO Cylinder keeps all the goodies of MK1.
We improve the surface of both the piston and the cylinder's inner wall to make it smoother and less resistant. 
And we are now using a higher grade of ladder gear and NBR rubbers.
 
It was the best, and now it's better.

 
 
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Sick of loosing index screw? or tired of adjusting the weak and wobbly aluminum extrusion rail inside the cylinder?  

Introducing the HAO's Advanced PTW Cylinder. 

The cylinder, which combined the latest HAO's technology in:
 
One piece SUS303 cylinder body with EDM precision wire cutting piston rail.  
Enhanced polymer-injected piston.
SUS303 anti-twisted spring rotation bearing system.
S45C heat-treated EDM wire cutting ladder gear.
SUS303 enhanced nozzle.
All re-design and reinforce NBR rubbers, O-rings.
BCGS (Bolt Carrier Group Sticker) make your PTW more like RS.  
 
MPS/FPS conversion : ( calculate  with 6mm 0.2 BBs)
M90  = 296.00 FPS = 0.81J
M110= 361.84 FPS  = 1.21 J
M130= 427.63 FPS = 1.69 J
M150= 493.42 FPS = 2.25 J

*Notice: BCGS is only compatible with HAO's Advanced PTW Cylinder with pre-milled 0.2mm thick depth slot for easy insert / withdraw without damaging the sticker.

*Notice: Please shoot the first 500 rounds gently in order to meet the best occlusion and performance.