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Sig MCX Spear LT Review (2026): 500 Round Test of the Next-Gen AR Alternative

Sig Sauer MCX Spear LT 5.56 NATO review hero — black anodized piston-driven rifle with folding minimalist stock, M-LOK handguard, 30-round PMAG and threaded 16-inch CHF barrel resting on weathered wood range bench at golden hour with sand berm in soft defocus and scattered brass on bench surface

Hands-on Sig MCX Spear LT review after 500 rounds — 1.5 MOA with match ammo, the folding-stock advantage, proprietary BCG question, and whether the 2,600 dollar piston rifle is worth it over a BCM RECCE-16.