The camo unlocks for the RGL-80 grenade launcher in Modern Warfare 3 can be challenging. After unlocking the Gilded camo by getting direct impact eliminations, you'll have to destroy 25 enemy equipment with the weapon for Forged.
What enemy equipment to destroy with the RGL-80 in MW3?
For the RGL-80 Forged camo challenge, you need to destroy lethal equipment planted by the enemy team, namely Claymore and Proximity Mine. These two equipment aren't used by many players, hence you may have a hard time completing this challenge in MW3 Multiplayer.
You may be tempted to destroy gear like Comm Scrambler and A.C.S., but unfortunately, field upgrades don't count for this camo unlock. I suggest keeping the RGL-80 as your secondary and whenever you find a match where enemies are using Claymores and Proximity Mines, take the opportunity to progress the challenge.
For this cam unlock, I highly recommend using the Engineer Vest as it allows you to spot enemy equipment through walls. It also highlights the equipment with a red outline (second image) so can't easily miss it. You should also try asking the enemy to plant Claymores and Mines via in-game chat. Players are often ready to help others during their tedious camo grind.
Stay tuned to Pro Game Guides for more Call of Duty: Modern Warfare 3 content. In the meantime, head over to our article on How to get kills with a magnification scope in MW3.