Peter Hofer Funfling 5-barrel hunting gun. 12ga x 12ga with .375 H&H Magnum over .30-'06 over .22 Hornet.
Or a custom designed MBR: (7.62x51 MBR): adjustable gas piston select fire action with non-reciprocating ambidextrous charging handle, auto hold open on empty magazine. Ambidextrous bolt release. Ambidextrous safety. Forward assist. M-14 stripper clip guide and M-14 sights. 22” barrel with the tri-compensator of the BM-59/62 with bayonet lug to take a custom 12” OKC-3S style bayonet. A full length barrel-in-line polymer stock with pistol grip and integrated picatinny rails that don’t interfere with the stripper clip feed. Accept a bipod. Use M-14 free fall magazines with bolt hold open followers, and have an ambidextrous magazine release.
Or custom designed Scout Rifle: .350 Remington Magnum. Lever action operating a rotary bolt. Integral suppressed barrel. Single round & stripper clip loading. 10-round rotary magazine. Leupold Model 4 CQ/T 1-3 x 14 scope on receiver mounted QD see-through mount. Peep sight. In stock recoil reducers. Sling. Five .380 ACP to .350 Remington Magnum chamber adapters for small game hunting. Custom 12” OKC-3S style bayonet.