Sig Sauer MCX Spear-IR SBR .300 AAC Blackout 9″ FDE

The Sig Sauer MCX Spear-IR SBR is a compact, semi-automatic short-barreled rifle chambered in .300 AAC Blackout. This MCX configuration includes a 9″ barrel, folding stock and an anodized Flat Dark Earth finish. It ships with a single 30-round magazine and an aluminum M-LOK handguard. The platform is designed for users who need a compact, highly configurable rifle for applications where a shorter overall length is desirable.

Key Specifications

• The caliber is .300 AAC Blackout.
• The barrel measures 9″.
• The action is Semi-Auto.
• The listed capacity is 30.
• The finish is Anodized in Flat Dark Earth.
• The stock type is Folding.
• Includes 1 magazine (30 rd.) as an accessory.
• The handguard is an Aluminum M-LOK style.
• The listed rate of twist is 1-in-5″.

The MCX Spear-IR SBR pairs a compact footprint with modular features and straightforward ergonomics. Its short barrel and folding stock make it easily stowed or carried in confined environments while the M-LOK handguard supports accessories without adding unnecessary bulk. For shooters seeking a short, capable configuration in .300 AAC Blackout, this MCX variant offers a focused balance of size and functionality.

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