Welsh Willy SMK XS20 MKI & MKII Service Kit


Woodfield GCP

The Welsh Willy  SMK XS20 MKI    MKI XS20 is the model fitted with a Copy of the HW Rekord unit . This has a screw adjuster behind the trigger. The MKII has the trigger adjusting screw through the center of the trigger blade.

WW XS20 MKII service kits, this model has the trigger adjusting screw through the middle of the trigger blade NOT behind the blade as on the MKI. This does not have the copy Rekord trigger.

Service kits comprise of
Pre-cut Mainspring
Delrin Top-Hat
Delrin spring guide
Delrin Piston Slip/Spacer washers x 2
Delrin Power-Bands x 3
Steel Inner Piston Sleeve
NLT Grease
How to do instructions

*Optional Piston seal colours vary from different suppliers*   to check what size piston seal you require place a 2p coin on the end of the cylinder and if it fits inside the tube its a 26 mm seal if the coin wont go into the cylinder its a 25mm seal

The current waiting time for the WW kits is 25 – 30 WORKING days. 

Please Make sure you know what you are getting into when you strip & tune your rifle, Woodfield cannot & will not be held responsible for any damage or injury caused whilst fitting the Welsh Willy service kit to your rifle, the kits have been tried & tested and fit that specific rifle only.

If in doubt have the kit installed by a Gunsmith..

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Additional information


WW XS20 MKI Service Kit, WW XS20 MKII, 25mm piston seal, 26mm Piston seal


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