I had the same problem years ago with a Marlin M 60 .22 semi-auto. The magazine tube rides below the bbl. as the ramrod does on the Huntsman.
I drilled a swivel screw size hole in the fore arm near the end, and inlet into the magazine channel slightly. Used the right size ''speed nut'', one of those spring steel plates often used in auto upholstery and trim, shortened the swivel screw to proper length, rounded the corners off the speednut and screwed the two together.
The rounded out speed nut turnseasily with the swivel screw within the small inlet unimpeded by the sharp corners it originally had, is plenty strong for carry purposes and has never caused any difficulty in twenty odd years since fitted.