XM-8
The XM8 is the project name for a lightweight, compact assault rifle under development, most prominently by the German small arms manufacturer Heckler und Koch. The US Army's main purpose in contracting this prototype weapon is to provide replacement options for the venerable but aging M-16 rifle, yet cost less than the M4 carbine. It is projected to replace the aforementioned rifles by 2005, although congressional approval for funding could delay its release.
The XM8 uses the core of the XM29 OICW project (also under development by H&K), namely its kinetic energy components, which are a derivative of the H&K G36 rifle, which is based on the Armalite AR-18. It, like the M4 and M-16, is chambered for the standard 5.56x45mm NATO round and is normally equipped with a 30-round box magazine, although 100-round drum magazines can be used if necessary.
The materials used to build the XM8 are almost entirely composites, causing it to be 20% lighter than the M4 (in similar configurations). Four different models have been proposed: a compact PDW (personal defense weapon) with a 9.5 inch barrel, a carbine with a 12.5 inch barrel, sniper and SAW variants with 20 inch barrels, along with some accessories (namely, scopes and bipods). One of the XM8's unique features is its modularity, which allows for quick repairs and caliber changes. In addition, preliminary tests in Arizona deserts have shown it to be an extremely rugged weapon, capable of firing 25,000 rounds before any overhaul is necessary, compared 7,000–8,000 for the M16A2.
Along with its basic components, the XM8 will complement the XM29, with such features as identical accessory mounts. In the future, these weapons will meet the small-arms needs of the U.S. Army.
XM8 prototype testing will continue through summer 2004 with the formal "decision to adopt" by the United States Army scheduled for September. A positive decision would lead to initial production in early 2005 with the first fielding later that year. The XM8 would then be renamed to M8.
