Chiappa Firearms M4-22 Gen-II Pro .22lr 18.5" Barrel Carbine Conversion Upper Receiver Kit - 500.093

The Gen-II Pro Series carbine upper is an evolution of the M4 model, adding a 7.8" free float aluminium forend with 8 position Picatinny rail. All other characteristics remain unvaried: 18.5" heavy match, parkerized barrel, steel bolt, MIL-SPEC components. Fully functional with select fire lowers.Just like the M4-22 rifle, the Chiappa M4-22 upper receiver kit takes advantage of AR platform dimensions and geometry. These upper receivers will fit on any Mil-Spec lower receiver to create a 22LR rifle perfect for plinking or training.