Inconsistant - Battle Arms Development Engraved Dust Cover

I ordered both the 6.5 Grendel and the 300 blackout ejection port covers. The fit and finish are good. They come packed in a ziploc bag. The 300 blackout cover is etched inside and out. Visible from both open and closed positions. The 6.5 grendel is only marked on the inside. One of the reasons I purchased it was for fast identification of stored lowers. Unless I store it with the cover open... well you get the picture