Things I just Added (That aren't in the pictures.)
In the back where the firing pin is, the upper first yellow 5 way connector on either side I replaced with a blue rod to prevent the trigger getting caught. You will know what I mean when you build this.
I modded the bottom of the trigger by making it connect to the barrel with 2 female parts of a hinge piece. It make the trigger sturdier.
Update 1- Increased pin draw back by moving trigger mech backwards. Removed blue rods because they are now useless. Fixed front, and added handle guard.