Modeled after the original SIG MCX platform, the SIG Sauer MCX Gen2 .177 cal CO2 pellet air rifle is built for realistic handling and economical training, target practice, and skill-building sessions. Its semi-automatic action and 30-round pellet magazine deliver fast follow-up shots and an authentic feel, while the 18" rifled steel barrel supports consistent accuracy.

Gen2 updates include an M-LOK handguard, flat blade trigger, reduced-angle grip, redesigned synthetic buttstock, and a low-profile recoil pad for improved control and comfort. Folding, dual-aperture peep sights are adjustable for windage and elevation, and the M1913 Picatinny rail provides flexibility for compatible accessories. The quick-detach buttstock houses the 88g or 90g CO2 cartridge (not included) to keep the design clean and streamlined.

Key features

• Realistic MCX-style handling: Built to replicate the look, feel, and control layout of the MCX platform for training and practice.
• Semi-automatic CO2 operation: CO2-powered system supports rapid follow-up shots for drills and target shooting.
• 30-round pellet magazine: Includes (1) 30rd pellet magazine for extended sessions with fewer reloads.
• 18" rifled steel barrel: Rifled barrel helps stabilize .177 pellets for improved accuracy and consistent grouping.
• Gen2 ergonomic upgrades: M-LOK handguard, flat blade trigger, reduced-angle grip, redesigned buttstock, and low-profile recoil pad.
• Adjustable flip-up sights: Dual-aperture peep sights adjustable for windage and elevation; folding front and rear sights.
• Accessory-ready rail: M1913 Picatinny rail for compatible optics and accessories.
• Ambidextrous safety: Manual safety levers are accessible from either side for left- or right-handed users.

Item details

• Brand: SIG Sauer
• Model: MCX Gen2
• Color: Black
• Caliber: .177 cal
• Action type: Semi-auto
• Operating system: CO2
• CO2 cylinder size: 88g / 90g (not included)
• Optimal pellet weight range: 5.0gr to 8.5gr
• Barrel: 18" rifled steel
• Sights: Folding, adjustable flip-up peep sights
• Accessory rail: M1913
• Stock type: Synthetic
• Muzzle velocity: Up to 545 fps
• Overall length: 34.75 in (883 mm)
• Trigger weight: 7 lb (31 N)
• Item weight: 7.35 lb (3 kg)