Hollow out the stock, fill the stock with IPA, add a tap under the sling swivel stud, use like a camelback while stalking.
Well that's just plain dumb. Everyone knows you cant hit chiit with a butt heavy gun.
A better solution would be to tape a couple of 16oz. keystone light cans to the barrel. with blue tape of course.... duh
Balance got to have balance.....
