"They look like parts for a magnum."
Magnum Parts (マグナムパーツ magunamu-pātsu ) are an item in Resident Evil 2.
An infamous typo exists in the American release of the game, where the Magnum parts are actually called "Mugnum Parts". This typo is consistent with re-releases of Resident Evil 2, even on the Gamecube. But it was fixed in the DualShock version.