Brcock plunger unit from the male fill valve. Plunger and o-ring only.

Commonly replaced part on these air rifles. Fits:
– Compatto
– Compatto MK2
– Bantam
– Bantam MK2
– Commander
– Ranger XR
– Pathfinder

• May also fit other models if using this piston with white o-ring.
  Fits all versions of the above including HR and sniper.