Board Thread:General Nerf discussion/@comment-29990286-20170706101614/@comment-27306930-20170707232442

Yes, it's a common problem. Due to the weight and bulk of the UPS, many owners glued the Hornet to the Titan. I know Cerrwiden mentioned that they can be hard to take apart, but the rails & clips on some Unity blasters didn't work very well. Mine are extremely loose, probably due to age and abuse (from previous owners, of course)

Bottom line, many Nerfers used hot glue to fix the problem. You could try pouring some boiling water over the joint to see if it will loosen up. But proceed with caution. Boiling water is, um, hot. Please avoid unnecessary trips to the emergency room 😉