Successfully swapped my 1/2 anvil to a 3/8 on my stubby : r/MilwaukeeTool
Milwaukee M18 FUEL™ ONE-KEY™ 1/2" Extended Anvil High Torque Impact Wrench with Friction Ring M18ONEFHIWF12E-0 | Milwaukee Tool NZ
Milwaukee M18ONEFHIWF1D-0C 1" Inch Drive High Torque D Handle 18v Cordless Impact Wrench Kit Long Anvil Body Only - Power Tools from Alan Wadkins Ltd Toolstore UK