Like the XD Tactical? Why? The M&P's barrel length is something like 4.25" while the XD service is 4.04". The standard M&P is longer than the Springfield XD Service. If I understand correctly, the M&P45 will have a 5" barrel, but won't be called "Tactical". This set-up seems to make more sense to me. The 9mm and .40S&W models already seem to have a slightly longer barrel than many other comparable models (as far as I know at least), and the 5" is a good size for the mighty .45ACP. I don't like the muzzle flip of polymer .45's with 4" barrels.