Sig Sauer MPX .177 CO2 Semi-Auto Air Rifle, Black, 8 in Rifled Steel Barrel
This factory-new Sig Sauer MPX .177 caliber CO2 air rifle mirrors the look and handling of the centerfire MPX platform. It features an 8 in rifled steel barrel, true semi-automatic pellet fire via the RPM pellet-drive system, and a full-length top Picatinny optics rail with accessory rail sections on the handguard. The 88/90 g CO2 cylinder is housed within the stock, and flip-up front and rear sights come installed. Overall length is 25.75 in with a 6.2 lb weight, delivering a compact, training-friendly package.
Power and cycling are CO2-driven using an 88/90 g cylinder accessible through the stock-release button. Packaging states up to 600 fps, while the current SIG product page lists up to 450 fps. The rifle includes a faux muzzle device, a manual safety selector, and robust polymer construction throughout the frame, handguard, and stock, all finished in black. Manufacturer part number: AIR-MPX-177-88G-30-BLK. Manufacturer reference: https://www.sigsauer.com/mpx-air-177-cal-88gr-co2-30-rd-blk.html
Condition
Overall Condition: Factory new condition, unfired with no signs of handling. Includes all accessories and paperwork in the original factory box/case.
Bore Condition: New - As-new bore with no signs of use beyond factory testing.
What’s Included
- SIG Sauer MPX factory retail box with molded foam insert
- SIG Sauer MCX/MPX CO2 air rifle owner's manual
- Factory adjustment tool (as pictured)
- Factory SIG AIR RPM pellet magazine installed
The MPX air platform is built around a rifled steel barrel for pellet accuracy, paired with a polymer frame, handguard, and stock for durability and light handling. The black finish presents a clean, modern profile consistent with the MPX line, including a faux muzzle device to complete the look.
A full-length top Picatinny optics rail runs the receiver for mounting options, and the polymer handguard integrates additional accessory rail sections. Factory flip-up front and rear sights are installed for immediate use out of the box.
The RPM pellet-drive system delivers true semi-automatic pellet fire. A manual safety selector provides straightforward control, and the stock integrates both a release button and a dedicated compartment for the 88/90 g CO2 cylinder.
Overall length is 25.75 in and weight is 6.2 lb, yielding compact dimensions that align closely with the centerfire MPX handling for training crossover. Power is CO2-driven from an 88/90 g cylinder housed in the stock. Packaging states up to 600 fps, while the current SIG page lists up to 450 fps.
Model details and factory configuration align with SIG Sauer mfg part number AIR-MPX-177-88G-30-BLK. For manufacturer reference, see: https://www.sigsauer.com/mpx-air-177-cal-88gr-co2-30-rd-blk.html