Hi Khmarks, That is one of two bumbers that go on one of the rear doors to make sure one door closes before the other. The cure is to put a large washer on before the screw that holds it. The screw should still be in the door. Many have taken a large washer and then ground it down or cut it to have a squarer profile in order to give as much coverage of the rubber area so it will not pop off again. Something everyone is dealing with. DaBullReceived my Grenadier 12/20/23. Had a rubber piece fall out the back a day later... attached is a picture of it. Can't figure out where it goes. Anyone help?
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