Try the Slik sling, puts barrel right behind shoulder. Can put gun back in without removing pack too. Anyway I like it, used a GB for 12-15 years before I tried Slik sling.I use a kifaru gunbearer. A 20” barrel before suppressor is about all I’ll deal with anymore. Anything longer gets in the way of my headlamp in the dark too much. If you don’t hike in the dark much it probably won’t bother you