All,

My Form 2/4 MPX just cleared..yeah...I said Form 2/4...long story for folks in WA State.  Anyway....anyone have suggestions on the following for a Gen 1 MPX
1.  Side Rail Covers
2.  Vertical Grip - Anyone know if a Unity Tactical VFG will work?  Do I just need longer screws?
3.  Selector - Anyone using a Battle Arms 45 degree short throw selector?  Installation is the same as an AR15...correct?
4.  Trigger - Anyone using a LaRue MBT?  Installation is the same as an AR15...correct?

Any and all help/advice will be greatly appreciated.

Here is a pic of the MPX:

I didn't think you could build an SBR at all in WA only buy factory ones. Nice set up however. I'll post some of mine when my form 1 gets approved. I'm not sure about any of the stuff you asked about but I will say for $10 or so the JP Enterprises spring kit does help the trigger a lot. That and I am using a Gear Selector hand stop and eventually one of their stubby gangster grips when my form gets back. That and I put a lasermax rail laser, and am getting a surefire M600V scoutlight on 45* mount for it. I am also running a Docter II sight on a JP Enterprises mount on the gun. Its a great set up so far.