The XM8 Modular Assault Weapon fires 5.56 x 45 mm NATO ammunition. Different barrels and modules can be swapped quickly depending on tactical situations.

The XM8 is the first increment of the Objective Individual Combat Weapon (OICW) Program. The XM8 represents the state-of-the-art technology for 5.56mm assault weapons.

The XM8 is a multi-configurable weapon that has four variants: a baseline assault weapon, a special compact, a designated marksman, and a light machine gun. To meet changing mission requirements, these variants are easily and quickly reconfigured at the unit level with the use of interchangeable assembly groups such as barrel, handguard, buttstock modules and sighting systems.

The XM8 Assault Weapon System is lighter than a comparably equipped M4 Carbine Modular Weapon System (MWS) with improved features and performance unavailable in the current M4. The XM8 will have increased reliability and decreased logistic costs.

Design goals:

  • Increased reliability – capable of firing 20,000 rounds without stoppages or malfunction.
  • Cost effective – 1/3 less than cost of current base weapon system.
  • Weight reduction – 30% weight reduction objective vs the current weapon system.
  • Longevity – increased over the current weapon system.
  • Less training – Soldiers trained in 1/3 the time.
  • Highly functional – quick and easy interchangeable parts for changing missions.
  • Multi-functional – three variants: one weapon family.

The U.S. Army is currently evaluating candidates for production. If approved, the Army could field 900,000.

FY2007 procures the initial OICW weapons for production qualification testing (PQT) and begins fielding the weapon to select Brigade Combat Teams (BCT’s). Full and open competition to select a contractor to continue RDTE (Research, Development, Test and Evaluation) will be conducted. Low Rate Initial Production (LRIP) option of the competitive RDTE contract will be awarded in FY 2008. FY 2009 through FY 2011 will be awarded as options. The contract will be competed in FY 2012 or sooner depending upon negotiation to obtain technical data rights. It is expected that the data rights will be owned by the Government after the FY 2010 buy.


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