All 6 of my PCPs including 4 bullpups have an Uncle Mike's style sling adapter cup in the stock at the rear. I use that same cup for my homemade windage and elevation adjustable monopod for bench shooting. The other end of the sling attaches to the picatinny rail on the front of the stock. They make sling pieces specifically to attach to picatinny rails. If I am getting close to a shot the gun is in my hands pointed in a safe direction. 3 of my 4 bullpups are P35s which weigh only 5 lbs unscoped. I would much rather carry a lighter gun around and I like the compactness of bullpups. To me they are just handy. I absolutely do not care to carry my Avenger. At about 4 feet in length is is just much, much, too long to be comfortable.