X aims his normal arm at an enemy.
v
v
??????????
v
v
It is now a buster.
v
v
Profit!
X aims his normal arm at an enemy.
v
v
??????????
v
v
It is now a buster.
v
v
CHARGE SHOT!
Fixd. Profit joke is lame.
The X3 intro really isn't the best source material anyway. X, Zero, and Sigma all change between X1 and X2 forms. X kinda works since it's an armor-swap (even though an on-the-field swap between different armors has only been demonstrated in Command Mission), and Sigma's could be rationalized as a rapid beam in/out I suppose (he's supposed to have entirely different bodies). But Zero just shouldn't be doing that, especially since he's going backwards.
Unarmored X is the only character for which the whole hand-folding thing is even remotely feasible. Pretty much every other character/armor's buster looks nothing like their arm. And even unarmored X leaves a few issues, which you can see if you examine the X3 intro closely. It still has to have X's arm shift pretty significantly, since X's arm doesn't fit the buster in either thickness or wrist shape (X's wrists are not circular; the top side is longer than the bottom).
And the whole Shining Finger thing in MHX definitely seems to show that X can reroute energy to it. Of course metal is a great conductor anyway, but the point still stands.
While I personally buy that, some people think it was a sort of ki attack (ghetto Hadouken). Since he's a robot, I'm not sure how much difference that makes.
X aims his normal arm at an enemy.
v
v
??????????
v
v
It is now a buster.
v
v
Profit!
Hey, it worked for MMZ.