The Sig MCX Spear (XM7) is the US Army's new service rifle, chambered in the powerful 6.8x51mm (.277 Fury) cartridge, aiming to replace the M4. While it offers increased firepower, the review highlights significant drawbacks like front-heavy balance, a thick barrel profile, and slower controllability during rapid fire compared to intermediate cartridge rifles. The NGSW program also includes the XM157 optic and XM250 automatic rifle, which may be more impactful than the rifle itself.
The XM7/M7 NGSW program is analyzed by a former Ordnance Officer, suggesting it's a strategic move for modularity rather than an immediate performance leap. Key considerations include the logistical challenges of new ammunition and the potential for caliber conversion to 7.62x51mm NATO. The XM157 optic's active laser use is flagged as a battlefield risk, emphasizing the continued importance of traditional marksmanship.
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