A'Leah Key , Get metal/brass rod slightly smaller than the bore diameter less then .177"/4.5mm, approx. rod size 5/32"or smaller should work fine. Make sure all other BB's are out of the reservoir and leave the door open, put a couple drops of oil in barrel, slide rod in the barrel from the muzzle until it hits the over sized BB and then tap it lightly with a hammer. The rods can be found at hardware/metal supply stores. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
i recently had same problem with red ryder bb gun . I was able to remove the plastic front sight by bumping the back of the sight. Then with needle nose pliers twisting and gently pulling inner barrel out. I found a stiff wire about the right size and attempting tapping the obstacle out, but didnt move much. luckily I was able to drill the object out because it was near the input end of the barrel. I believe it was a misshaped bb or two. I put the barrel back in by pushing it with a little force and twisting it. then simply snaped the plastic sight back into place. The sight looks like it has a screw but it is only plastic cast. The outer barrel is slotted for it to slip into.
If it is in the barrel of the weapon then using a metal thin line or something small but agile that can fit through the barrel to push the BB back into the loading chamber(or reverse) should work. Make sure the magazine is out so that the BB just falls right out. If it gets stuck at the back of the barrel and is unable to fit through the loading chambers transfer hole I would then recommend either deconstructing the gun so that you can get at the BB or bring it so a store that can repair it. If the BB is stuck in the magazine because you loaded it improperly, your best bet is take apart the magazine to get at the misplaced BBs unless the magazine in this case has a released lever so that the BBs can simply drop out of the magazine.
