2019年6月30日 · The Marine Corps had been working with Raytheon to develop a GPS-guided 120mm round for the M327, which would also be rocket-assisted, improving the weapon’s maximum range from five to 10 miles. This would still be less than half that of an M777 firing the GPS-guided Excalibur shell and a fifth of that of a HIMARS launching 227mm guided ...

The MO-120 RT uses 120 mm rounds with a range of 8.2 km (5.1 mi) and the PRPA (RAP-Rocket Assisted Projectile) with a range of 13 km (8.1 mi).

EFSS系统中最核心的就是M327线膛迫击炮，该炮其实就是法国TDA军械公司研制的RT120迫击炮，该炮身管长1.7米，重658千克，含4发待发弹。 该炮设计非常独特，直接用轮架作为支架，节省了很多重量，并方便了拖曳/作战模式的转换。 牵引时，直接在炮口前部安装一个牵引环，就可以拖着走。 身管外侧都是螺纹，通过移动轮架与炮管的位置即可实现俯仰角度的调整，设计非常巧妙。 另外这样做的好处就是增加了身管的表面积，提高了散热效果。 RT120迫击炮在当年绝对 …

2015年12月16日 · The 120mm mortar round will double the current range to 16 kilometers, or 10 miles, and provide GPS accuracy well within 10 meters of the target (industry officials place it within 2 two meters).

The new PERM (Precision Extended Range Munition) 120mm rifled mortar round aims to give the EFSS a reach of 17 km/ miles, with CEP accuracy of 20m at full range. That requires a guidance system of some sort, unspecified in documents, though the US Army’s parallel APMI effort to field GPS-guided 120mm mortars is worthy of note.

2019年4月29日 · Spear 120mm轻型迫击炮系统是在CARDOM迫击炮的基础上通过配备先进的反后坐装置并增加后坐长度，可将原来120吨的后坐阻力降到10吨以下，使轻型轮式底盘承载而不需要设置驻锄，同时降低部件的重量，使全系统的重量明显下降。

2011年10月4日 · ATK and General Dynamics Ordnance and Tactical Systems are teaming to offer a full-up solution for the U.S. Marine Corps’ requirements for the rifled, 120mm Precision Extended Range Mortar (PERM). The new guided munition will provide the Corps’ Expeditionary Fire Support System (EFSS) towed-mortar the option to engage point targets from ...

2018年3月15日 · The EFSS comprises the French TDA MO 120 RT 120 mm rifled mortar which is designated the M327, a suite of ammunition, and two ITVs, plus a Light Strike Vehicle for command and control (C2) and fire-direction control (FDC).

总重量约1798磅的m327式120毫米迫击炮是美国海军陆战队目前可空运的最大型间瞄火力支援系统，可以为指挥官打击一系列目标提供更强大的火力支援能力。

M327 120MM TOWED RIFLED MORTAR WEAPON The Expeditionary Fire Support System utilizes a 120mm towed rifled mortar that can fire smoothbore or rifled ammunition. The rifled mortar rotates the round as it exits the barrel providing greater stability, accuracy and range over current smoothbore ammunition.