This image is a derivative work of the following images: File:Blow-Forward_firearm_operation.jpg licensed with PD-self 2010-12-31T18:32:24Z DL24 405x522
|Description={{en|1=Simplified & comparison diagram of Simple Blowback and Blowforward operation.}} |Source=Own work by uploader |Author=[[User:Amenhtp|Amenhtp]] |Date=2009/06/21