I just picked up the PE-02 Shadow Deomolitions/PX-01 Shadow Pack (from ToyArena--because they're AMAZINGLY AWESOME) and was wondering if any of you know what to do with the two pegs on the briefcase/backpack. We have yet to have the set reviewed on Youtube, and the instructions--or lack there of--don't show anything about them.

I'm aware that this add on is a back pack to the FP Commander set/s but when used on the trailer or as a backpack, the pegs are never utilized.
REVIEW:(no pics unless you guys request them)
The PE-02 Shadow Demolotions set is the exact same quality as the earlier Shadow figures. The only differences are the minor paint apps found on the tips of the barrells from yellow to red, the gun metal gray on the barrell is now Nemesis Prime smoke-teal, and pretty much anything else that was yellow has now been changed to red.
I found that my PE-01 Shaddow Warrior had great joints, tightness and the durability was the same as all previous released, I found no errors with two left or right feet, no missing parts, and a clean paint job.
The peg of the PE-02 fits great into my FP Commander's shoulder slots, much better than DIA Commander's shoulder cannons. It looks even greater with the original release of the PE-01 Shaddow Warrior on the opposite shoulder.
The PX-01's back pack fits onto the trailer quite nicely by use of the sliding peg-into-slot motion utilzed with the second City Commander (Ultra Magnus release). Much like in trailer mode, the back pack fits greatly and securly attached to Commander's back in robot mode. It makes use of friction around the back of the Commander. The PX-01 also has 2 swiveling square pieces that sit arround the sides of the square back shape found on any of the Commander releases. In either forms the PX-01 has two three holed pieces on the opposite ends to hold both of the PE Shadow Warriors, and can be adjusted to any hole by choice of one's preference.
If anyone else was wondering, NO the briefcase looking backpack, also known as PX-01, can NOT be held by either Prime in suit nor non-suited Commander modes. The handle can be removed however but cannot be maneuvered through the hand hole.
Frostic Prime's Final Thoughts:The set is a definite must for 3rd party fans, such as myself, especially if you have any of the FP Commander sets. I may not have the Nemesis Commander set, but it sure as hell looks great on my spare DIA Commander. Even without a Commander the set looks great with it's fellow Shadow Warriors, the only thing that wouldn't make much sense would be the extra PX-01 set that be left useless without a Commander set. If you are not a fan of PE's not-so "perfect" quality this set may not be worth the $50 (+S&H) price tag. But I HIGHLY recommend this if you do have the original PE-01 Shadow Warrior.
Order yours
NOW at Toy Arena!
http://toyarena.com/pe02-shadow-demolitions-px01-shadow-pack-p-4398.html?cPath=5&osCsid=f733169fa9ca7ecfba2ec6fada5c2114