This is a replacement Piston head seal for the SMK and Remington Spring air rifle models.
Please note this will only fit models with 25.5mm outer diameter seal – please check yours before ordering.

Remington Tyrant – Should fit
Remington Thunderjet – Should fit
Remington Thunderceptor – Should fit
Remington Pest Controller – Should fit
Remington Sabre – Should fit
Remington Express – Fits some models but not all please measure existing
SMK XS19 – Should fit
SMK B2 – Fits some models
SMK SYNSG – Should fit