FGC 9 Flip Up Dust Cover for the Hybrid upper
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FGC 9 Flip Up Dust Cover for the Hybrid upper

it looks the same but it got a little bit of a rounded edge for the integrated ejection cover the link to the MK I models ...

similar models —

FGC 9 Flip Up Dust Cover for the Hybrid upper alternatives
FGC 9 Flip Up Dust Cover
UntangleWORKS