Better Nail Picks. GBN leads the way in innovation and listens to its customers. We have developed and have had in the field for a number of years new and daring nail picking devices that are ahead of all the others. Linear Bearings and exacting specifications make this system the best. It even senses when there is a jam. Standard on the Trailblazer and Excalibur Nailing Systems. More rugged solenoids and positive position selective nail picking on Patriot and Explorer.