No Image Lot 508 A Walther PPK/S Blow Back CO2 Powered .177 Air Pistol. Takes .177 Steel BB’s, Complete with Box, 508A Walther PPK/S Blow Back CO2 Powered .177 Air Pistol. Takes .177 Steel BB’s, Complete with Box, Cadmore Auctions Ltd A Walther PPK/S Blow Back CO2 Powered .177 Air Pistol. Takes .177 Steel BB’s, Complete with Box, Instructions, Tool, Two magazines, and New Umarex... Add to watchlist Live