My son is a hard core backpacker that loves to hunt too. He just completed 200+ miles at Philmont and killed his old pack (and boots, and tent, and sleeping bag, $$$$!). He’s also skinny as a rail, growing like a weed, but hasn’t filled out yet. I’m sure that part is coming. I’d like to buy him a modular pack, where he can swap out the belt and harness and different bags as he grows and for different purposes. I’m a Stone Glacier guy, but even their small belt isn’t small enough. Do any other companies make a modular pack with a really small belt option?