The XM29 OICW was a series of prototypes of a new type of assault rifle that fired 20 mm HE airbursting projectiles. The prototypes were developed as part of the Objective Individual Combat Weapon program in the 1990s. The term SABR was also used at certain points, but is less common.
XM29 – Later Vintage Mockup
Objective Individual Combat Weapon
The Objective Individual Combat Weapon or OICW was the next-generation service rifle competition that was under development as part of the United States Army OICW program; the program was eventually discontinued without bringing the weapon out of the prototype phase. The acronym OICW is often used to refer to the entire weapons program.
A working XM25 prototype is tested in 2005; this was part of OICW Increment 2
The final four ACR program test entrants
The Heckler & Koch MP7, conceptualized in the late 1990s as the kinetic energy component of the SABR (later XM29); the XM29 was put on hold, but the MP7 entered production in 2001
One tester is kneeling with a XM8 Carbine and XM320 attached, the other has the XM8 sharpshooter