Yeah I was going to go that route until I found the front and rear height specs for them and by my backaswards math they would barely provide lower 1/3 rd co wittiness sighting,why Night Fision didn't provide taller sights I have no clue.yeah would be nice if it was a little more, i almost got the Romeo zero for that reason but the romeo zero was only $50 less than the swampfox when it was on sale. Have you thought about the smapmfox iron sights that co witness with the sentinel? I know its another $100 but youll almost lose that much selling everything you just bought.
there is a coupon code where you can get them for $93 shipped
The Shield and Wasp both provide absolute co wittiness, the shield is plastic and plastic lens,the Wasp aluminum body and plastic lens,I thought the Swampfox aluminum body and glass lens was a upgrade but alas I'll live with the Shield and it's less than ideal construction materials for it's sight picture.