Sergeant First Class
Sergeant First Class / SFC / E-7
The Kayrank Helmet Rank System is a military grade, durable, tactical device used to identify the rank of the individual wearing the Kevlar Helmet. The patented design is a rank device that snaps into the Night Vision Device (NVD) bracket on the Army Combat Helmet (ACH). The device can be easily removed when the NVD’s require reattachment.