Sig Sauer MCX Spear Magazine 20rd 277 Sig Fury Coyote Tan Steel

The Sig Sauer MCX Spear 20-round magazine delivers reliable feeding for the military's Next Generation Squad Weapon platform. This steel construction magazine handles the high-pressure 277 Sig Fury cartridge while maintaining compatibility with multiple calibers including 6.8x51mm, 6.5 Creedmoor, and 7.62 NATO.

What Makes This Different

Unlike standard AR-pattern magazines, this double-stack design incorporates reinforced steel construction to handle the increased chamber pressures of modern hybrid cartridges. The magazine body features enhanced dimensional tolerances that ensure consistent cartridge presentation under rapid fire conditions. Military specification testing validates performance across temperature extremes from -40°F to 160°F.

Key Features

• 20-round capacity double-stack configuration for extended engagement capability
• Steel construction withstands 277 Sig Fury's 80,000 PSI chamber pressure
• Multi-caliber compatibility: 277 Sig Fury, 6.8x51mm, 6.5 Creedmoor, 7.62 NATO
• Coyote Tan finish matches military and law enforcement color schemes
• Anti-tilt follower design prevents feeding malfunctions during rapid fire
• Reinforced feed lips maintain cartridge alignment under stress
• Drop-free design enables tactical reloads without magazine retention

Field testing demonstrates consistent feeding through 10,000+ round cycles without spring degradation. The magazine functions reliably in sand, mud, and water immersion scenarios typical of military deployment conditions. Competition shooters report smooth bolt-over-base feeding that supports sub-MOA accuracy potential when paired with match-grade ammunition.

Technical Specs

• Capacity: 20 rounds
• Construction: Steel body with reinforced feed lips
• Finish: Coyote Tan coating
• Compatible Calibers: 277 Sig Fury, 6.8x51mm, 6.5 Creedmoor, 7.62 NATO
• Platform: Sig Sauer MCX Spear rifle system
• Follower: Anti-tilt polymer construction
• Spring: Chrome silicon wire for consistent tension
• Country of Origin: USA

This magazine represents the evolution of military small arms technology, bridging legacy 7.62 NATO compatibility with next-generation cartridge performance. Professional users require equipment that functions without compromise across diverse operational environments.