Full o ring kit for the Air Arms s500 & s510 Xtra FAC high power air rifle.
This kit includes all o rings including external barrel o rings.

All o rings included for .177 (4.5mm), .22 (5.5mm) and .25 (6.35mm) calibers.

This kit is suitable for all versions of these rifles (as there have been slight design changes over the years not all o-rings supplied will be required).

Please note the firing valve body seal (s610H) is not included in this kit although it is available separately here.