The M4/M4A1 5.56mm Carbine is a lightweight ... The Army authorized the conversion of all M4s to the M4A1 standard with the upgrade currently budgeted for 300,000 M4s. The Army will complete ...

The JAK Harbinger Kit is an aftermarket part for the M4 Assault Rifle in Modern Warfare 3 and Warzone.Equipping this conversion kit provides a significant increase in overall damage at the expense ...

Holger 556 JAK Beholder Rifle Kit This long-range DMR conversion kit dramatically increases ... while aiming down sights. MCW, MTZ-762, M4, and the AMR9 JAK Ettin Double Barrel Kit Two stacked ...

WASHINGTON (Army News Service, June 16, 2013) -- Soldiers will continue to use the M4 carbine or improved M4A1 ... M4s to the improved M4A1. That conversion includes a heavier barrel, and also ...

The GAO denied Colt's second protest in a Nov. 16 decision. This latest decision makes FN the only maker of both M16A4s and M4 carbine variants for the U.S. Military (I think.) The majority of ...