The SIG MCX SBR is a compact, short‑barreled 5.56 NATO rifle built on the modular MCX platform. This SBR features an 11.5‑inch barrel, folding + telescoping stock for compact transport and adjustable length‑of‑pull, a top Picatinny rail with iron sights (IR), and an M‑LOK handguard for accessories. The MCX uses modern short‑stroke piston/robust operating components and is intended for versatile duty, range, and CQB use.

(1) 30‑round AR‑pattern magazineOwner’s manual and warranty cardBasic cleaning kit / bore brush