RIA is offering up for auction an example of the Walther KPK – a very rare, and very desirable handgun developed by Walther during World War II for vehicle crewmen. The KPK was based on the PPK, and is almost identical, save for an aluminum frame and shrouded hammer. Forgotten Weapons has produced a short video showing off the rare pistol:

The weapon is expected to sell for at least $40,000, almost double that of the Pedersen rifle covered earlier in the week.

This isn’t the first KPK sold through RIA; previously in 2011 they auctioned off an earlier prototype estimated at up to $90,000 value.