Fast reloading compared to homemade LAWs
Not too big
Easy to use
None found so far
I picked the MKX up because my team needed a launcher after our homemade ones went crap on us.
This thing is so beautifully nice for the tank hunter, or just for the one who wants to clear a fort or bunker.
Reloading is breech loaded, the barrel/chamber slides away and tilts up for easy loading of a nerf rocket, then snaps back into place to fire.
The launcher is considerable smaller and lighter than many of its homemade contenders I've seen, and can hit targets that are much farther away accurately. Because of an internal regulator, the MKX is also much safer than the homemade jobs that could blow on you without proper planning.
Lastly, it carries that mil sim feel to it.
If you're into scenario games and need a tank hunting weapon, this is the best one on the market. I love it.