You might look at something like this.....LTUME1978 wrote:I have an ACOG on my M-4. Any suggestions on what to do for a back up sight? I had though about removing the ACOG, installing the back up sight (sight that came with the rifle) and sighting it in, then removing it and reinstalling the ACOG. How repeatable is this? Hoping someone here can offer a better option.
http://soldiersystems.net/2011/07/03/ka ... ng-sights/
Just do a search for "offset backup sights" on most search engines. There are a lot of different styles available.