Found 2 3D-models for “Waist gun” across many websites

#flying fortress#machine gun#Sanding#sand#Shoulder#waist#Waist gun#B-17#replacement#WW2
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.50 Guns for 1815mm wingspan Easy Tiger / Hobbyking RC B-17

.50 Guns for 1815mm wingspan Easy Tiger / Hobbyking RC B-17

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Gundam MG Sandrock replacement parts

Gundam MG Sandrock replacement parts

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