well as i am on the hunt for 20 GP barrels most dont have sight bases and the only ones i can fins are F marked for use with flat top uppers. where can i find a sight block for a2 uppers? or will it be an issue?
Posted: 8/28/2014 11:37:21 AM EDT
[#1]
http://www.del-ton.com/AR_15_Barrel_Parts_Accessories_s/7.htm?searching=Y&sort=13&cat=7&show=10&page=3
They have both styles
Posted: 8/28/2014 2:02:30 PM EDT
[#2]
a F-FSB will work just fine with the A2 upper
Posted: 8/28/2014 10:27:42 PM EDT
[#3]
Brownells has Doublestar A2 FSBs in both .750 & .625 as well as High Standard 20" A2 barrels with standard (non-F) FSBs.
