It is a put together... BSA Martini actions where plentiful, strong, and cheap. Popular to do at one time. I have seen many 4 position 22 target rifles made up from these actions. Has this one been case hardened? Originally they where blued. Looks as if someone tried to make it a German Schultzen style rifle. Deep hook on the butt end and big cheek piece. Fancy curls on the lever also act as a pistol grip. Forend with the barrel wedge and barrel band is different. Interesting looking rifle.
Border Bandit. Floberts rifles where cheap imports for the Boys rifle market. When those guns where imported they had little if any gallery shooting as ammo vs. income was expensive. The shells of the day where black powder too with the associated problems. The general stores sold 22 rimfire cartridges individually. Maybe 5 shells for a couple pennies. And you better bring home the same number of squirrels, rabbits etc. for the pot. Gallery shooting became more popular with the pump, and semiauto rifles with the Lesmoke and smokeless powders.