Nail guns are widely used on many construction jobs, especially in residential construction. While they boost productivity in some situations they may also cause tens of thousands of painful injuries each year. By using a nailer in full sequential mode, many of these injuries can be prevented. For more information on nail gun safety: NIOSH Nail Gun Safety: http://www.cdc.gov/niosh/topics/nailgun/ Straight Talk about Nail Gun Safety: http://www.cdc.gov/niosh/docs/2013-149/