I don't know the article got it right, the whole idea of the .300 WM was to keep it in a 30/06 OAL, and it could be chambered in a standard length action, the M24's to my knowledge are built on standard length actions instead of short actions because the military had already thought of this. Just screw on a new barrel, open up the bolt face or install a new bolt, headspace and go. Should not cost 4,000, if the military armorers build them, material costs for premium parts should be 1500 or so, including an HS precision detachable mag assembly.