Mouse Fart upgrade O-ring


-Improved rubber composition

-Further improves FPS and J stability

-Fits all series of Mouse Fart O-ring piston heads from 1.0 to 1.4 series

-High cemical resistance

-Suggested lubricant is WD40 brand dry PTFE

-Comes as standard on Mouse Fart piston head from 2022.06.10.

39 in stock

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Additional information

Weight 10 g


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