ProMag SIG18 6-Round 9mm Magazine for Sig Sauer P290 Blued Steel

The ProMag SIG18 magazine delivers reliable 6-round capacity for Sig Sauer P290 pistols in a compact profile that maintains the firearm's concealability. This aftermarket magazine provides shooters with additional capacity options beyond factory offerings while maintaining proper feeding geometry.

What Makes This Different

Constructed from heat-treated blued steel rather than polymer alternatives, this magazine offers enhanced durability for extended service life. The steel construction provides consistent spring tension and feed lip integrity under repeated loading cycles. Unlike some aftermarket options that compromise reliability for cost savings, ProMag engineers this magazine to meet original equipment specifications for proper chambering and ejection.

Key Features

• 6-round capacity in 9mm Luger chambering
• Heat-treated blued steel construction for corrosion resistance
• Compatible with Sig Sauer P290 pistol platform
• Standard capacity design maintains concealability
• Chrome silicon spring for consistent feeding pressure
• Witness holes for quick round count verification
• Drop-free design for tactical reloads

Field performance centers on consistent ammunition feeding across various bullet weights and profiles commonly used in 9mm applications. The magazine functions reliably with both ball and hollow point ammunition configurations. Concealed carry users benefit from the flush-fit profile that doesn't extend beyond the grip frame, while the steel construction withstands daily carry conditions without structural degradation.

Technical Specs

• Capacity: 6 rounds
• Caliber: 9mm Luger
• Compatibility: Sig Sauer P290
• Construction: Blued steel body
• Spring: Chrome silicon wire
• Follower: High-impact polymer
• Base plate: Steel with polymer insert
• Finish: Traditional bluing

This magazine addresses the need for backup capacity while maintaining the P290's designed carry profile. ProMag's manufacturing standards ensure dimensional consistency with factory specifications, providing shooters with a cost-effective magazine solution that doesn't compromise functional reliability.