The Australian Border Force is giving owners of Riverman rifles 30 days to turn in their operator-assisted firearms as they look too much like banned weapons.

The Riverman Gun Works’ OAF series rifles are made in Idaho and about 100 or so (numbers vary) have been imported into Australia. Now, as reported by News 7 Brisbane, although a straight-pull bolt action, the gun is now outlawed and officials want them turned over to Border Force.

The “bungled buyback” could cost tax payers down under as much as $1 million Australian (about $790,000 US).

The two-page letter sent to Riverman owners officials state that the reclassification “has been made due to the firearm being substantially the same in appearance as a fully automatic firearm, specifically the Stoner CQB Mod 2 rifle.”