Well I  am asumeing that nobody makes a large hole upper. I shoot left handed and I want an A-2  upper for my SP1. I have used offset pin adaptes but I reall dont like it . It bindes if you tighten it up good or it losses up if you dont want the binding . ( yes I am installing it properly) it is because the left and right sides of the pin arent aligned the same when it is tight unless you shim it. I am fine with a used one  Anybody want to part with one  for $$   BTW I want to keep all  Colt parts on it. H

Do a GOOGLE for Daniel Defense, cost a whole lot less, then just swap your barrel into the front.

Here is a link to Daniel Defense site
DanielDefense

Also here is a pic of one mounted on my Colt Match HBar

http://outcast.homeunix.org/uploads/guncase.jpg

Stuart

Quoted: I want an A-2 upper for my SP1. I want to keep all  Colt parts on it.

Colt made some. Check the Equipment Exchange - you might find one there.

Here's a pic of my Colt Sporter


and here's a link to USMC03's spotless Colt AR15A2 HBAR
www.coloradoshooting.org/75%25%20preban%20colt%20ar15a2%20hbar.jpg