If a ARMS#40 sight is used is there a flip-up front sight that would attach to the gas block rail and be of the correct height?

GG&G and ARMS makes anything you need for 10s.

A.R.M.S.' site is lacking.  Use
[url]http://www.armalite.com[/url]
for the proper 10 sized Swan Sleeve.
I have the #1411 and #1406
[url]http://www.armalite.com/sales/catalog/components/mounts_rings.htm[/url]

[url]http://www.gggaz.com[/url]
[url]http://www.gggaz.com/products/ar-10fire.php[/url]
Love my Scout Rail and front flips.

Dave S

BTW, you can mix and match the two companies' AR-10 stuff.  Don't mix with AR-15 stuff.......
RFA = RongFrigginAnswer

Oh, I don't know if an AR-10/SR-25 specific #40 is made.  One phone call......

My AR-10 has a swan sleeve with the integral flip up rear sight. Had a short range visit the other day and could not get on paper with the swan sleeve and an AR-10(armalite) detachable front sight . Now have a Bushy BMAS flip up front installed to see if it will work. Hope to get back to the range this week. John.