Curious Calibres
From the archives of Darkisle¸ the sort-of English and definitely fictitious island that was a byword for all things unnatural and eldritch....
Lucius Carnford was the island's leading expert on firearms during the 1920s¸ and Curious Calibres is one of his irregular publications about some of the more interesting guns that were available. It features information on six unusual types of pistol¸ lovingly reproduced in the original sepia.
Designed as a resource for any RPG set in the mid-20th Century¸ Curious Calibres gives full information on using these guns in your game¸ with specific stats for use with Call of Cthulhu rules.