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SIG Sauer MPX Gen 2 .177 450FPS (SIG-AR-004)

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This product only ships within Canada

Created from the same robust foundation as its predecessor, the SIG MPX GEN II Air Rifle has been updated with improved accuracy and modified furniture and controls. Now featuring an M-LOK system handguard, flat blade trigger, reduced angle grip, a redesigned buttstock and a low-profile recoil pad. Chambered in .177 pellet and complete with rifled barrel and flip-up sights, the CO2 powered SIG MPX GEN II Air Rifle keeps you on target while delivering 30 rounds of semi-automatic firepower down range.


  • Flip-up, dual aperture peep sights adjustable for windage and elevation.
  • Ambidextrous manual safety levers.
  • Quick detach buttstock houses 88g or 90g CO2 cartridges.

To achieve peak performance with this air rifle, we recommend using SIG SAUER or equivalent premium pellets with the grain weight listed below. 

*Results may vary based on ammo weight, temperature, and altitude.


Action Type Semi-Auto
SIG AIR Reflex Sight Ready No
Accessory Rail Picatinny Rail
Operating System CO2
Sights Folding
Stock Type Synthetic
Caliber .177 cal
Optimal Pellet Weight Range 5.0gr - 8.5gr
Mags Included (1) 30rd Pellet Mag
Overall Length 25.75 in (654 mm)
Trigger Weight 7 lb (31 N)
Muzzle Velocity up to 450 fps*
CO2 Cylinder Size 88gr, 90gr
Weight 6.2 lb (2.8 kg) without magazine