The Heckler & Koch XM8 is a lightweight assault rifle system developed from the late 1990s to early 2000s. The rifle was designed by German small arms manufacturer Heckler & Koch (H&K), and shares design and engineering with their G36 rifle.

XM8為一款發射 5.56×45mm NATO 小口徑步槍彈的 擊發調變式 突擊步槍。 它以 短行程活塞導氣式 和 轉拴式槍栓 運作，性能和內部結構跟HK G36接近， 槍托 為伸縮式設計，供彈具也是跟G36一樣的半透明彈匣，並能夠把多個連接在一起以方便換子彈。

2025年2月3日 · XM8为一款发射 5.56×45mm NATO 小口径步枪弹的 击发调变式 突击步枪。 它以 短行程活塞气动式 和 转拴式枪栓 运作，性能和内部结构跟HK G36接近， 枪托 为伸缩式设计，供弹具也是跟G36一样的半透明弹匣，并能够把多个连接在一起以方便换子弹。

XM8為一款發射 5.56×45mm NATO 小口徑步槍彈的 擊發調變式 突擊步槍 。 它以 短行程活塞導氣式 和 轉拴式槍栓 運作，性能和內部結構跟HK G36接近， 槍托 為伸縮式設計，供彈具也是跟G36一樣的半透明彈匣，並能夠把多個連接在一起以方便換子彈。

2022年1月16日 · The XM8 system grew out of the U.S. Army’s XM29 program in search of a successor to the in-service M4, and here is a behind-the-scenes look at Heckler & Koch's configurable system.

The Heckler & Koch XM8 is a modular assault rifle system designed by Heckler & Koch. Originally conceived as the assault rifle portion of the XM29 OICW, the XM8 was designed in 2002 as a possible replacement for the M4 carbine and M16 rifle series and is heavily based on Heckler & Koch's G36 rifle series.

The Heckler and Koch XM8 Carbine is a lightweight assault rifle system developed from the late 1990s to 2000s. This amazing rifle was made by German arms company Heckler and Koch and shares the design and engineering with their G36 rifle.

2023年8月16日 · The Heckler & Koch HK XM8 was an experimental modular assault rifle system that underwent trials with the US Army in an effort to become its next standard-issue assault weapon system. The firearm was to replace the long-running Colt M16 rifle and M4 carbine forms.

The XM8 is an experimental assault rifle manufactured by Heckler & Koch for the U.S Army. It was slated to replace the M16 family of weapons, but these plans have now been abandoned.

The XM8 is a derivative of the Heckler-Koch G36 assault rifle, and thus it is almost similar to that rifle in design and functioning. XM8 features a short piston stroke, gas operated action, with rotating bolt locking.