Su-22M4 Fitter-K  -  c/n 25018  -  Modex  613 (Luftwaffe 25+11)  -  NVA/LSK JBG-77  -  Luftwaffenmuseum Berlin-Gatow, September  2001

SPPU-22 gun pod contains a movable GSh-23L twin barrel 23mm gun and 250 rounds of ammunition.
The pod can be mounted either forwards or backwards.