This listing is for a full extended seal kit for the HW100/HW101 (Also known Beeman HW100).

Fits all versions of the HW100/HW101 including BP/Bullpup.

We include all seals for both .22 (5.5mm) and .177 (4.5mm) just do not use the one you do not require.

This kit includes ALL internal and external seals INCLUDING filling adaptor seals.

Includes the upgrade to polyurethane spec on the main inlet valve, which means this valve lasts much much longer.

Also includes the original spec PTFE valve stem seal – beware kits thatsubstitute this for another material.

Full Sizing chart isincludedso you know which seal is which.