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All good stuff. I don't have pics as I am posting from work. It's a 7 1/2 inch drop in quad rail, that drops into a standard M4 set up, replacing the plastic standard hand guard. It takes a round or triangle end cap, as the bottom side fits into the top side so both end caps will work with it. I ordered a round one from Brownells. Don't get me started on how youtube has been treating them. The low profile gas block and tube will fit under it, as it's a pistol length .750 set up for 300 BLK. The only purpose of the "other" gas block is to hold the end cap in place. After reading through all your suggestions; I believe if I get a gas block with the rail extension on it, I can mount my front BUIS sight on it. If it's the correct rail height, it will match up with the quad rail, with just a bit of space between them were the end cap sits. I found a cheap one Vertiforce Tactical using their 15th anniversary coupon code. I'll see if that works; but in the mean time, since I am out less than $20 at this point if this fix works, I am still open to ideas and wisdom.
Thanks,
Rodney
So does your current setup already have a standard GI barrel nut and Delta Ring Assembly?