Seiler Instrument is a contract manufacturer of complex instruments, machine parts, assemblies, and subassemblies. Seiler is the Original Equipment Manufacturer for the optical fire control used on all United States howitzer and mortar systems. See below for an idea of the products we are capable of manufacturing.  If the product you are looking for is not currently in production or listed, contact us for information about special orders.

optical fire control circle Get Our Guide to Optical Fire Control for Howitzers & Mortars arrow

Military Products

Commercial Products

View All Products


What is ERLS?

ERLS logo
“ERLS is a non-nuclear alternative to radio luminescent light sources.”

Learn more >