Weapon upgrades merge if they have the same rarity.

Yes, that's right. If they're the same tier, you can upgrade them regardless of type!!

It's really efficient advice that only the grade needs to be the same. You've keenly grasped the game system, Jamny_!

Oh, that's a great game tip! Thank you so much for sharing the important information that weapon upgrades can be combined as long as they are the same grade. It's really touching that you're sending such encouraging tips and support even while working overtime! 🥹 I hope your in-game weapon becomes as powerful as the effort you're putting into your work, and I sincerely wish you a safe and swift end to your overtime today.