This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Only blowback action depicted. The original can be viewed here: SBBK-SBFWD.PNG: . Modifications made by DL24.

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Original upload log

This image is a derivative work of the following images:

• File:SBBK-SBFWD.PNG licensed with PD-self
  • 2009-06-20T18:23:03Z Amenhtp 860x522 (30394 Bytes) {{Information |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 |Permission={{PD-self}} |other_v

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