SIG Sauer MPX .177 Cal CO2 Air Rifle, Semi-Automatic, 8 in Rifled Steel Barrel, Folding Sights, Black
This SIG AIR MPX .177 caliber air rifle stands out with its 88/90 g CO2 power source housed in the stock, an 8 in rifled steel barrel, and a full-length Picatinny top rail. It is factory new, includes all original accessories and paperwork, and delivers a factory-stated velocity up to 450 fps with an overall length of 25.75 in and weight of 6.2 lb.
Condition
Overall Condition: Factory new condition, unfired with no signs of handling. Includes all accessories and paperwork.
Bore Overall Condition: New - As-new bore with no signs of use beyond factory testing.
What’s Included
- SIG AIR MCX/MPX air rifle owner's manual
- Pellet seating tool
- Pellet Seating Tool instructions sheet
- Factory SIG AIR magazine-shaped pellet belt unit installed in rifle
The MPX CO2 system uses 88/90 g cartridges stored inside the stock module, providing a clean, integrated setup. The stock includes a release button and an internal housing that secures the CO2 cylinder, keeping the rifle balanced and easy to handle.
The 8 in rifled steel barrel is designed for .177 (4.5 mm) pellets and is backed by SIG AIR’s stated velocity of up to 450 fps. A manual safety lever and a 7.0 lb trigger offer straightforward, familiar controls.
For sighting and accessories, the rifle features a full-length Picatinny top rail bridging the receiver and handguard, with additional short accessory rail sections on the sides and bottom. Folding iron sights include a flip-up front post and a flip-up rear aperture for immediate use out of the box.
The synthetic molded polymer fore-end with elongated vent slots includes threaded inserts that accept screw-on Picatinny rail sections, and the black synthetic stock pairs with an AR-style textured pistol grip for a secure hold. A detachable magazine-shaped pellet unit feeds the system, and the rifle’s compact 25.75 in overall length and 6.2 lb weight make it easy to maneuver. MPN: AIR-MPX-177-88G-30-BLK.




