Shadow Systems MR920 Foundation Series 9mm Compact, 4-inch Match-Grade Barrel, Optics-Cut Slide, Steel Sights, Six Magazines
This Shadow Systems MR920 Foundation Series is a compact 9mm built around a 4-inch, match-grade, conventionally rifled, nitrided barrel and a matte black nitride slide with a patented plate-less direct-mount optics interface. It features steel sights (black rear/white-dot front), a wrap-around textured polymer frame with smart ergonomics, and comes with six magazines. Made in the USA and marked Plano, TX, it combines practical upgrades with a clean, duty-ready configuration.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal handling marks from previous use.
What’s Included
- Shadow Systems factory box (MR920 Foundation Series)
- Shadow Systems Safety & Operation Manual
- Interchangeable grip backstraps (Shadow Systems NPOA system)
- 3x 17-round magazines
- 3x 15-round magazines
- Mix includes Magpul PMAG GL9 polymer and Glock factory 9mm magazines
The MR920 Foundation Series compact frame accepts Glock-pattern double-stack 9mm magazines and is compatible with G19 holsters. Capacity is listed at 17+1, and six magazines are included to support ready-to-go range or duty use.
The 4-inch, unthreaded, match-grade steel barrel is conventionally rifled and nitrided. The slide wears a matte black nitride finish and adds angled front and rear serrations plus a chamfered muzzle for easier manipulations and holstering.
The patented multi-footprint, plate-less direct-mount optics interface is integrated into the optics-cut slide and ships with a cover plate and screws installed. Steel sights pair a plain black rear with a white-dot front for a clear, durable sight picture.
The wrap-around textured polymer frame includes an extended beavertail, double undercut trigger guard, and textured support-hand index ledges. Controls include a left-side textured magazine release and a flat-faced polymer trigger with a safety tab. An accessory rail is integrated into the dust cover, and a carbon-steel guide rod rounds out the build. Frame marking reads: MADE IN USA, Plano, TX.