Free: Contests & Raffles.
I just seen this one and was going to check it out. Unfortunately I've never used it but it looks decent. I have an alps pack frame I like. There is a video showing the pack and has good reviews. An optionhttp://www.amazon.com/dp/B00E3Q7Y1A/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=WEU125ZE3S6T&coliid=I2W0E2P1L55HY7
Don't want to sound like an gear anti-snob, but I've used a variety of packs over the years- only ones I was really unhappy with were the Trapper Nelson (hurt like hell with a load) and a cheap metal one (broke). We have Coleman Peak 1 frames that are probably 20 years old that work just fine. Got the last one at a yard sale for about 10$. I'm sure some of the newer pricier ones are very nice. Just don't see the need. Kinda like a gold-plated toilet seat at some point. I'm saving up for one of those
Bi-Mart has a decent frame for under $100 and then you can strap on a day pack or some type of duffle to carry your smaller gear. You can strap a rifle on about any pack but IMO if you are hunting you have hands to carry your gun.