Here is a photo off the ARMS web site. I have this arriving any moment, probably tomorrow, and it comes from a reliable person who describes it as excellent. I have decided to stay with iron sights, as I am hitting so well even at 100 yards as I practice more.
Here is the description off the ARMS web site. I am told that with this mount, you can cowitness your iron sights with an Aimpoint M2 mounted.
See my Aimpoint M2 also for sale on this board, new in box, at waaaay below any where...
NOTE: email directly, as I cannot watch the board. firstname.lastname@example.org
For the A1 and A2 carry handles on M16 rifles.
The main body of the A2 Plus mount locks into both the carry handle channel and the handle front support, utilizing two A.R.M.S.® self locking thumbnuts. The capability provides rigid support of the dovetail platform that is extended over the hand guards; just like the patented Swan® Super Extended Sleeve. The A2 Plus mount comes with the A.R.M.S.®/Swan®/aka Mil-Std. 1913 rail machined to mate the top of the carry handle, much like the famous A.R.M.S.® #2 M16A1A2 Scope Mount. It provides dual mounting capabilities while maintaining the enhanced iron and optic see thru function. The bi-level mounting capability offers multiple combinations of attachments - no tools required. The mount also features a brush breaker at the front to prevent branches and other objects from wedging between the hand guards and the suspended rail. Optical and laser perfect parallel alignment are achieved, while eliminating head and vibrations that may be experienced in barrel mounting systems.
NOTE: It does not fit on detachable handles.