Vac-SEAL25 - 25mm Piston Size

Easily increased your air gun velocity buy replacing the standard HW factory seal. The VacSEAL25 is machined to exact tolerence to slide into the following 25mm tubes without any sizing required: Hw30, HW77(pre-84) R7, etc.

Now available with HW Pro-Guide tuning Kits!

*seal may come in a different color than Red.

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