Airsoft Elite Force 1911 Tac Carbine Conversion Kit (wip)

A little project I've started working on. I started because I couldn't find a pistol carbine kit for the elite force 1911 tac, so I decide to attempt to make one myself.

Note: there is a few things that I haven't figured out are the three holes where the rail of the pistol attaches to I haven't decided the size yet.

I also haven't design the stock for the gun, or the charging handle yet.
For the charging handle I was thinking that it would attach to the serrations on the front of the slid