This listing is for 5 breech / barrel o-ring seals for the Stoeger XM1 and XM1 Bullpup / Bullshark air rifle / airgun.

These seals are easy to replace and commonly wear.

Worn seals can result in loss of power and accuracy.
Choose .177 (4.5mm), .22 (5.5mm) OR .25 (6.35mm) caliber