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but positive seal when firing
Doubtful it'll fit anything else
Full auto or semi auto - wireless updatable firmware
Matches nicely with the Python Stock
Speed Seal Plunger for BK1S/BK2S Siren but positive seal when firingTheorized, Designed, and created in the BCFF Ecosystem an upgraded plunger for the Zius BK1S and BK2S. SLS printed in Nylon by a local canadian fab shop. This has been our starting point for improvement, pretty much the first step needed to push the performance on the Zius BK1S BK2S blaster. This is a speed seal plunger, the o ring will feel looser and floppy untill air pressure friction is pushing into it's sealing position. Which results in low drag