Sig Sauer MPX .177 Cal CO2 Semi-Auto Air Rifle, 8-inch Rifled Steel Barrel, Black, AR-Style Controls, Flip-Up Sights
This factory-new Sig Sauer MPX .177 caliber CO2 air rifle mirrors the MPX layout with AR-style controls, a belt-driven Rapid Pellet Magazine system, and a Picatinny optics rail. It features an 8-inch rifled steel barrel, accepts 88 g or 90 g CO2 cylinders, and ships in its original box with manual and the RPM magazine installed. Factory literature lists velocity up to 450 fps, while the packaging for this sample states up to 600 fps.
Condition
Overall Condition: Factory new condition, unfired with no signs of handling. Includes all accessories and paperwork in the original factory box/case.
Bore Overall Condition: New - As-new bore with no signs of use beyond factory testing.
What’s Included
- Factory SIG Sauer MPX Air Rifle retail box with molded foam insert
- SIG Sauer MPX Air Rifle owner’s manual
- SIG AIR Rapid Pellet Magazine (RPM) installed
The MPX air rifle format brings AR-style ergonomics to a .177 caliber platform, combining a semi-automatic, CO2-powered action with SIG’s belt-driven Rapid Pellet Magazine (RPM) system. The rifle runs on readily available 88 g or 90 g CO2 cylinders, supporting extended shooting sessions without frequent cartridge changes.
Its 8-inch rifled steel barrel and flip-up front and rear sights provide a clear sight picture out of the box. A Picatinny top rail provides mounting options for accessories as desired, and the short synthetic handguard includes accessory slots for additional setup options.
Controls will feel familiar to AR-pattern users, with an AR-style magazine release, a two-position safety lever, and a bolt-catch-style control. The curved trigger has a factory-listed weight of 7.0, delivering a consistent pull for repeatable shot strings.
The synthetic fixed stock and SIG-branded pistol grip provide a stable, durable interface. At an overall length of 25.75 inches and a weight of about 6.2 lb, the rifle offers a compact, well-balanced profile. Factory literature lists velocity up to 450 fps; the packaging for this specific sample states up to 600 fps.