British WWI pocket knife with pistol?

[knife7knut]

The mechanism reminds me a little of the pocket flare pistols the pilots would carry in the 1960's. Only difference was the flares screwed into the end of the barrel.Looked like an oversize ball point pen or small flashlight.

[eveled]

Could it be as simple as a fire starter?

[Gunsil]

I still think it is a "sappers" knife for dynamite work.

[Bert Barrel]

Thanks for the reactions!!! A detonator for dynamite.....indeed this seems more likely to me than a percussion pistol.
I'm going to inquire at the army !! If I have results, I will let you know for sure !!

Greetings to all!!!!

Bert