Guardian Fill Nipple Assembly

Fill Nipple Cap Molded Black - Protects your HPA tank fill nipple from dirt and contaminants.Fill Nipple Cap Single Black - Protects your HPA tank fill nipple from dirt and contaminants.

Fill Nipple O-Ring (4/90) - Replaces the 4/90 oring inside your tank's fill nipple.Fill Nipple O-Ring (4/90) - Replaces the 4/90 oring inside your tank's fill nipple. May not work with all fill...

HK Army Fill Nipple Cover - PewterKeep your air tanks fill nipple protected with the HK Army fill nipple cover. The cover can easily be snapped on and off with its ball bearing locking technology...

HK Army Fill Nipple Cover - GoldKeep your air tanks fill nipple protected with the HK Army fill nipple cover. The cover can easily be snapped on and off with its ball bearing locking technology. The...

HK Army Fill Nipple Cover - BlackKeep your air tanks fill nipple protected with the HK Army fill nipple cover. The cover can easily be snapped on and off with its ball bearing locking technology. The...