Independent Arms Group

 was a weapons manufacturer headquartered in Liberty, Kentucky, and a government contractor manufacturing military ordnance (identified as IAG10002).

Products

 * OMG Model .50 caliber suppressor for assault rifles. Manufacturer serial number 81184, national stock number 2005-01-535-1816, military part number 15003/87386.

Appearances
The IAG name appears on the suppressor for the assault rifle in Fallout 4 and Fallout 76.

Behind the scenes
The serial numbers do not actually correspond to any existing item.