Replacement power adjuster knob for the following Brockock air rifles:
– Compatto MK2
– Compatto XR
– Sniper XR
– Ranger XR
– Atomic XR
– Bantam MK2
– Bantam XR
– Commander
– Commander XR
– Concept XR
– Pathfinder

Trough hole size 2.3mm please check with existing before ordering