I guess I'd say so with Westley Richard's pre-A&D, Greener's adaptations & I'm sure several others. Maybe the answer lies in Dig's Boxlock text. Then there's variations on the A&D Body Action like the belts & braces of the upper & lower scear & the Kerner-Anson, a staple of German platforms. Boxlock is a bit to generic noting only that the components are in a metal box.

Kind Regards,

Raimey
rse