There may be a BB lodged in the magazine well. This can happen if you do not shoot all of the BBs out of the magazine prior to removing the magazine. If the magazine does drop out, but a BB remains lodged, you may be unable to reinsert the magazine. Use a flashlight to look up in the area where the magazine is inserted to see if a BB is lodged. Also, when inserting a BB magazine, keep the airgun in an upright position, not turned on it's side or upside down. ALWAYS be certain the airgun is ON SAFE and follow all gun safety precautions when working on or handling any gun.
