Hi.54th AIB, Handles left on for above or the "padded" crash-pad (basicaly about 9" square of padded ply in place of screen ). Also sometimes one (usually L.H. is required to be left on for mounting any of the inter/sync. gears that opperate (like the Scarff-Dybovsky & Vickers "Challenger" ) on the rear (thumb) trigger,when the handle portion may be used to mount suitable brackets fo it. Otherwise the handles would be cut off in the field , but generally they would be purpose machined off at the factory to contract spec,. for specific use ie.later Sop. Se5 etc. Regards John McKenzie.