I searched for this previously and could not find an answer, so I went ahead and tried it. This post is for future searchers. A Midwest Ind. low profile gas block - both pinned and set screwed models (and similar gas blocks from the other companies) will indeed fit under the skinny Daniel Defense Omega X-Rails with plenty of room to spare.
Hope this helps the next guy.
Also, thanks to Guy at Wolverine for the parts
Hope this helps the next guy.
Also, thanks to Guy at Wolverine for the parts


















































