Changes and aftermarket parts consist of:
-Drop forward and bottom line asa
-Lapco sight rail
-Psychoballistics rear velocity Adjuster
-Newer version split grips for easy disassembly
-highly polished hammer
-Highly polilshed inner bore where the hammer slides
-Highly polished power tube
-Lightened trigger pull
-Shortened velocity screw as a plug so the rear velocity could do all velocity adjustments.
-Bead blasted and automotive shop clear coated body. No color added. Yep, that is the natural color of the aluminum when bead blasted. It looks as if it had glitter in the paint (sorry for the poor pic). Looked much better in person.