Sig Sauer MCX Gen2 .177 Caliber CO2 Air Rifle
The Sig Sauer MCX Gen2 .177 CO2 Air Rifle combines realistic semi-automatic shooting with modern tactical styling and upgraded ergonomics. Featuring a 30-round magazine, rifled barrel, M-LOK handguard, flat blade trigger, and flip-up adjustable sights, it offers fast, accurate and enjoyable performance for plinking and target shooting. Powered by 88g or 90g CO2 cartridges, it delivers velocities up to 545 fps, while the synthetic stock, M1913 rail and ambidextrous safety add practicality and customisation potential.
The Sig Sauer MCX Gen2 .177 Calibre CO2 Air Rifle takes the proven MCX platform and upgrades it with improved handling, enhanced control layout, and greater practical accuracy. Built around a semi-automatic CO2-powered action, it delivers fast follow-up shots and realistic rifle-style performance, making it ideal for plinking, informal target shooting, and training-style use.
This Gen2 model features a rifled barrel, 30-round magazine, and a velocity of up to 545 fps, giving it a strong blend of accuracy, capacity, and shooting enjoyment. The updated design includes an M-LOK handguard, flat blade trigger, reduced angle grip, redesigned buttstock, and low-profile recoil pad, creating a more modern and comfortable shooting platform.
For aiming, the MCX Gen2 comes equipped with flip-up dual aperture peep sights, adjustable for both windage and elevation. The rifle also features an M1913 accessory rail, allowing shooters to customise their setup with compatible optics and accessories.
Powered by 88g or 90g CO2 cartridges, housed neatly within the quick-detach buttstock, the Sig Sauer MCX Gen2 offers reliable shooting performance with the convenience of high-capacity CO2 power. For best results, Sig Sauer or equivalent premium .177 pellets between 5.0gr and 8.5gr are recommended.
- Action Type Semi-Auto
- SIG AIR Reflex Sight Ready No
- Accessory Rail M1913
- Operating System CO2
- Sights Folding
- Stock Type Synthetic
- Calibre .177 cal
- Optimal Pellet Weight Range 5.0gr - 8.5gr
- Magazine Included 1 x 30-round magazine
- Overall Length 34.75 in / 883 mm
- Trigger Weight 5.5 lbs
- Muzzle Velocity Up to 545 fps
- CO2 Cylinder Size 88g / 90g
- Weight 7.2 lbs
- Semi-automatic action for fast, realistic follow-up shots
- Updated Gen2 design with improved handling and control layout
- M-LOK handguard for a modern tactical look and accessory compatibility
- Flat blade trigger for a cleaner, more consistent trigger feel
- Reduced angle grip for improved comfort and control
- Redesigned buttstock for a more refined shooting position
- Low-profile recoil pad for a sleeker, more comfortable shoulder fit
- Rifled barrel designed to improve pellet stability and accuracy
- Flip-up dual aperture peep sights for versatile aiming
- Sights adjustable for windage and elevation
- Ambidextrous manual safety levers for left or right-handed use
- M1913 accessory rail for fitting compatible optics and accessories
- Quick-detach buttstock design for easy CO2 cartridge access
- High-capacity magazine for extended shooting between reloads
- Synthetic furniture for durability and practical outdoor use
- Realistic MCX-style platform, ideal for training-style shooting, plinking and informal target practice
- Sig Sauer MCX Gen2 .177 Caliber CO2 Air Rifle
Is the Sig Sauer MCX Gen2 .177 CO2 Air Rifle semi-automatic?
Yes, the MCX Gen2 uses a semi-automatic CO2-powered action, allowing you to fire fast follow-up shots without manually cocking the rifle between each shot.
What calibre does this air rifle shoot?
This rifle shoots .177 calibre pellets, making it well suited to target shooting, plinking and general garden range use where permitted.
Does the Sig Sauer MCX Gen2 use pellets or BBs?
The MCX Gen2 is designed to shoot .177 pellets, not steel BBs. For best performance, premium pellets between 5.0gr and 8.5gr are recommended.
How many shots does the magazine hold?
The rifle comes with one 30-round magazine, giving you plenty of shooting before needing to reload.
What CO2 cartridges does it use?
The Sig Sauer MCX Gen2 uses 88g or 90g CO2 cartridges, which are housed inside the quick-detach buttstock.
How powerful is the Sig Sauer MCX Gen2?
It has a muzzle velocity of up to 545 fps, although actual performance can vary depending on pellet weight, temperature and altitude.
Does it come with sights?
Yes, it comes with folding flip-up dual aperture peep sights, which are adjustable for windage and elevation.
Can I fit a scope or red dot sight to this rifle?
Yes, the rifle features an M1913 accessory rail, allowing compatible optics and accessories to be fitted.
Is the Sig Sauer MCX Gen2 reflex sight ready?
No, this model is not listed as SIG AIR Reflex Sight Ready, but compatible optics can still be fitted using the M1913 rail.
Is this rifle suitable for left-handed shooters?
Yes, it features ambidextrous manual safety levers, making it easier to use for both left and right-handed shooters.
What is the stock made from?
The rifle uses a synthetic stock, giving it a durable and practical feel for regular use.
Is the barrel rifled?
Yes, the MCX Gen2 features a rifled barrel, which helps improve pellet stability and accuracy.
What is the M-LOK handguard for?
The M-LOK handguard gives the rifle a modern tactical layout and allows compatible accessories to be added.
What type of shooting is this rifle best suited for?
The Sig Sauer MCX Gen2 is best suited to plinking, informal target shooting and training-style use, thanks to its semi-automatic action, realistic handling and 30-round magazine.
Is this a good rifle for beginners?
Yes, it can be a good choice for shooters who want a realistic, easy-to-use CO2 air rifle with modern tactical styling and enjoyable semi-automatic performance.