This holster is made specific for the .22 LR Cobra Derringer C22 and C22m. Barrel is 2.4” and firearm is 4” overall. It comes with a formed fit to keep the firearm secure. The holster and pistol are easily concealed in your pants or jacket pocket. Made from quality 6/7 oz vegetable tanned leather from Wickett and Craig leather tannery and conditioned with a water resistant finish.