SIG SAUER MPX ASP .177 Cal CO2 Semi-Auto Air Rifle, Factory Red Dot Combo, 8-inch Rifled Steel Barrel, Black, with box
This SIG SAUER (SIG AIR) MPX ASP Red Dot model is a factory-new .177 caliber CO2 air rifle configured as a ready-to-shoot combo. It features an 8-inch rifled steel barrel, a flat-top receiver Picatinny rail with additional short rail sections on the handguard (non-continuous), and flip-up iron sights, plus a factory SIG SAUER 1x20mm red dot optic. Marked Made in Japan, it runs on 88/90 g CO2 cylinders and delivers a manufacturer-quoted velocity up to 575 fps.
Condition
Overall Condition: Factory new condition, unfired with no signs of handling. Includes the items listed below. Original factory box included.
Bore Condition: New - As-new bore with no signs of use beyond factory testing.
What’s Included
- Optic: SIG SAUER 1x20mm red dot with Picatinny mount
- Manual: SIG MCX/MPX CO2 air rifle owner’s manual
- MagNotes: Belt-fed pellet magazine installed
Built on SIG AIR’s MPX platform, this .177 caliber air rifle uses 88/90 g CO2 cylinders and a semi-automatic action for fast follow-up shots. The RPM belt/chain-driven pellet magazine system supports the semi-auto operation while keeping loading straightforward.
The 8-inch rifled steel barrel is paired with a flat-top receiver Picatinny rail and separate short Picatinny sections on the handguard for mounting optics and accessories. Factory flip-up front and rear sights provide immediate backup sighting options out of the box.
This Red Dot combo includes a SIG SAUER 1x20mm red dot mounted via Picatinny, complementing the rail and sight setup for quick target acquisition. The package is factory-configured and includes the owner’s manual.
The rifle’s black synthetic stock and vented synthetic handguard keep weight manageable while maintaining durability. It carries the Made in Japan marking, aligns with the ASP series designation, and is identified by SIG’s part number AIR-MPX-MRD-177-88G-30-BLK.
Overall length measures 25.75 inches with a listed weight of 6.6 pounds. The manufacturer cites velocities up to 575 fps, delivering consistent performance for .177 caliber pellets in a compact MPX-style format.




