They were on their first joint mission to Utapau to hunt down General Greivous. The gunship that Slayer was transported in was under heavy anti-air attack while it was touching down on a LP. Slayer survived with a badly damaged helmet! He picked up his less fortunate fellow 501st trooper's helmet and carried on to reorg at the RP...

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That's the history of my more damaged helm.
My third project for my 501st props
Front

Left

Right

Rear
