5KU Stainless Steel URX Handguard Tool

"Bought this for my Madbull URX 3.1 10.75", it worked flawlessly. Fits like a glove and was able to tighten down the barrel nut to absolute tightness. 10/10.

"Used on my Madbull URX 3.1 13.5" handguard, and while it works, it's quite flimsy material and after having mounted the handguard a mere 3 times, one side of teeth on the tool are bent. I was barely able to hammer it back into shape to finish the job but I'll be needing another one if I ever plan on taking the handguard on/off again. Unfortunately it's the only airsoft option (that I could find) as I don't feel like buying a real KAC tool, assuming it even works for the Madbull one.