Here's mine, I've had her for exactly one week, and am dying to take her to the range!
I hit up an airsoft store for the carry handle and the rail covers came in at about $25 total.
The carry handle is metal, but the fit and finish could be a little better. Still, it clamps on tight and, as long as the sight picture is straight,
I think it will do just fine. Has the large and small sight apertures just like the factory, though I think the distance aperture is a little smaller than the factory sights.
Airsoft Megastore - Full Metal M4 M16 Removable Carrying Handle
The rail covers were the total surprise - in a good way! They lock tight to the rails, with no wobble, and each section is a link that can be separately removed and attached to the next link quickly and easily. So I was able to make the 4 rail covers that came with the package into 2 (almost full) side rail covers and 1 (almost full) bottom rail cover. If I ever do another order from them, I may order another pack to completely cover the rails, but for now I am happy.
DBoys Full Length Armored RIS Rail Cover Panels Set of 4 - BLACK
Two mods left and she should be done! I want to get a nice beefy grip. Thinking about this one:
Amazon.com: Hogue Rubber Grip Ar-15/M-16 Rubber Grip with Finger Grooves: Sports & Outdoors
And a brighter front sight post:
Amazon.com: Tapco AR0902 AR15/M16/A2 5-Piece, Color Front Sight: Sports & Outdoors