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3/10/2007 4:44:51 PM EDT
looking for the right rings for flat top with fsb in the way .what will work best. i have  been  looking at rra tatical carry handle to have iron sights , witch rings will  get me over the top.
3/11/2007 4:18:34 PM EDT
[#1]
depending on what power your scope is, you probably wont even see the fs.  do not get the tactical carry handle.  get some rings designed for the ar, at least .8" high.  with a scope you need a flip up rear and qd rings.
3/11/2007 10:52:54 PM EDT
[#2]
Check your scope to see how far forward it'll need to be to get good eye relief and a good cheek weld (easier with 2 people).  Many people find the scope has to be positioned with the eyepiece ahead of the charging handle, and the front ring would end up off the flattop rail.

If this is the case, you'll either need one of two things:

- An extended riser or scout rail, which will give you both extra height and extend the rail out over the handguards.  Depending on the height of the rail, you should be able to get by with low or medium height rings.  YHM makes some good inexpensive extender rails, and lots of others make them as well.  You want to make sure your rear BUIS will still mount behind the riser rail.  Here's a recent post with some extended rails:
www.ar15.com/forums/topic.html?b=3&f=18&t=319010

- A one piece scope mount that extends out past the front of the flattop rail.  The LaRue SPR or SPR-E are the best, with repeatable quick-release levers, but are pricy at around $200.  The Armalite is about half that, and is very solid but has less eye relief and is semi-quick-release.  JPR makes a good in-between one with good eye relief, but isn't quick-release.  You can see all of them here:
www.jprifles.com/1.6.3.php

If you don't need the scope mounted forward, high or ultra high rings will do the trick, depending on your scope, your rear BUIS, and your cheek weld.
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