Jamie Lynn Spears' fiancé and baby-daddy Casey Aldridge appears to pull a gun on a photographer in a new online video clip.

A male snapper gets more than he bargained for during an encounter with Britney’s future brother-in-law on a dirt track near their Kentwood, Louisiana, home.

In footage posted by TMZ, Jamie Lynn and Casey can be seen approaching the pap in their all-terrain vehicle.

The daddy-to-be shouts at him to leave the premises, calling it private property.

He then emphasises his point by showing the shutterbug what the website identifies as a gun.

When the photographer backs away, Casey and his pregnant missus drive off.

Sounds like Casey’s gonna fit in just dandy with that crazy Spears lot.