Gibbs used Enfields (.308 ishapore carbines) as a base for their quest survival rifles. They put a pretty neat twist on the butt trap and put a waterproof cylinder with fishing line and hooks as well as water resistant matches a compass and other items like those found in the handle of a Rambo knife inside.
No, no, not bugs ! The screens are for "peace" time. Simply unload rifle, open bolt, insert screen into chamber area, load chamber with hashish, light and take a long draw from muzzle . Instant "peace"! ( Ishapore models only )