Considering that this weapon upgrade item grants the user the Quick Draw talent with the attached weapon, and the fact that by default the Battle-Brother will have the Quick Draw talent as one of his starting talents, is there any further benefit to be drawn (heh!) from it?
I assume that these kind of weapons would normally (i.e. without the dipole mag-lock) be holstered or slung over the shoulder by a strap or something thus freeing the Battle-Brother's hands.
-K