I hear ya... I also prefer a fixed, pinned FSB for anything that might conceivably be used with irons, especially for co-witness setups... but I find that if it has at least a mid-length gas system, a gas-system-length FF handguard gives you plenty of room if you set it up right. I have both an A4 20" and a 16" pencil middy set up this way with Aimpoints and KAC flip up rear sights. I have a 200m zero on the dot and use it for everything up close; for anything past 300 or so I flip up the KAC rear, click it to the range, and send it with the irons right through the tube of the Aimpoint. It works well. With the FF handguard, there is no POI change with the irons whether I'm shooting offhand, with a solid rest, monopodded, sling-supported, off a bipod, or any other way unless you rest it on the barrel. It makes hits out to 500+ a breeze.

Last edited by henschman; 08-11-14 at 15:23.
"This motto may adorn their tombs
(Let tyrants come and view):
We rather seek these silent rooms
Than live as slaves to you."
Lemuel Haynes, 1775
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