This factory replacement magazine is made for the Sig Sauer MCX-Spear and is finished in coyote tan. Constructed to the manufacturer’s specifications from steel, it is a double-stack 20-round magazine compatible with multiple calibers. The design accepts cartridges up to 2.850 inches overall length and includes side witness holes for round count visibility.
Key Specifications
- The magazine holds 20 rounds.
- Intended fit is Sig MCX-Spear.
- Compatible calibers include 277 Sig Fury, 6.8x51mm, 6.5 Creedmoor, and 7.62 NATO.
- Construction material is steel.
- Exterior finish color is Coyote Tan.
- Magazine style is double-stack.
- Accepts cartridges up to an overall length of 2.850 inches.
- Baseplate is made of steel.
- Features side witness holes for round count visibility.
- Factory model designation is MCX-Spear.
Built to deliver consistent feeding and durable service, this magazine is a practical spare or replacement for MCX-Spear owners. Its multi-caliber compatibility and robust steel construction make it well suited for range use, training, and duty applications where a reliable, serviceable magazine is required.





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