Mag wells have always had two adjustments (height and length) in JAEs.
I'm glad that MDT is finally getting close to reissuing their version of the JAE.
I'm also glad that they have reduced the LOP as its easy to add spacers but hard to shrink if too long at its minimum.
I'm just disappointed that where they took the length out renders their version of the grip furniture and removable comb not backward compatible with the existing fielded JAE population which could have provided a large market for these type of items from day one.