An adjusting device for a nail gun includes a magazine, a shaft, a disc feeder and a positioning assembly. The shaft is mounted in the magazine and has two sliding grooves longitudinally formed respectively in the shaft and multiple positioning recesses formed on the sliding grooves. The disc feeder...http://www.google.com.au/patents/US7617959?utm_source=gb-gplus-sharePatent US7617959 - Adjusting device for a nail gun
