Buckler Counter I

Feat Description
The Buckler is well suited to making attacks and counters that could not normally be accomplished using a normal shield. When needed, the Pathfinder can elect to make an instant attack with his buckler that has a 15% chance of disarming the shield or off-hand weapon of his foe if the attack successfully hits. This feat can be used every 120 seconds; additional ranks increase the success rate.

Granted to Pathfinder at Level 5

Buckler Counter All, Scout Gatekeeper