Pressing: Manufacturing may be one of your biggest expenses. There are a few different ways this can go down: If you have a distribution deal, your distributor may pay for manufacturing up front and then recoup the costs from sales.
When a opening takes place (someone retires) then the Marine Corps promotion board looks at the available candidates and their fitness report scores to fill the vacancy. So make sure you have excellent scores and reports. I picked up SSgt (E6) in 10 years. Gunnery Sergeant (E7) may take up to 14 to 16 years.
b. To SSG primary zone: Sergeant (SGT) with minimum 71 months time in service (TIS) and 9 months time in grade (TIG). c. To SSG secondary zone: SGT with minimum 47 months TIS and 6 months TIG. d. To SGT must complete SSD 1 prior to board appearance, IAW AR 600-8-19, paragraph 1-28 a. (1). e.