Trying to help a friend ID this, I,ve seen something similar but were ? he thought is was gun related but I think its something to help with a support or hold something open as on a vehicle etc?. its probably about 8" in length, twist the knurled handle and it extends about another 6",
https://www.milsurps.com/images/impo.../sEYULTa-1.jpg
https://www.milsurps.com/images/impo.../SNAUD0A-1.jpg
https://www.milsurps.com/images/impo.../UAsYUdN-1.jpg