SIG Sauer MPX Gen 2 9mm Pistol, 8 inch Barrel, Short-Stroke Gas Piston, Custom Upgrades, 5x 30-Round Mags
This Gen 2 SIG Sauer MPX 9mm pistol pairs the MPX's proven short-stroke gas piston system with a focused set of high-quality upgrades. It features an 8 inch barrel, ambidextrous controls throughout, and a free-float M-LOK handguard with a full-length Picatinny top rail. Notable additions include an SB Tactical telescoping brace, a Hyperfire skeletonized trigger, a Radian Raptor MPX ambidextrous charging handle, and a BCM KAG hand stop. It comes ready with five 30-round SIG MPX polymer magazines and installed low-profile folding iron sights.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There is minor scuffing on the rail. There is carbon buildup on the tri-lug adapter. Light scratches and small blemishes are present.
What’s Included
- SB Tactical telescoping arm brace (installed)
- Low-profile folding front and rear iron sights (installed)
- BCM KAG hand stop (installed)
- Radian Raptor MPX ambidextrous charging handle (installed)
- Hyperfire skeletonized aftermarket trigger (installed)
- Compact spiral/ported muzzle device (installed)
- Manticore Arms rear interface block/top plate (installed)
- 5 SIG SAUER MPX 30-round 9x19 polymer magazines
- Backpack
The MPX platform uses a short-stroke gas piston with a closed, rotating bolt, engineered for reliable 9mm operation. This pistol variant features an 8 inch barrel and ambidextrous controls, including the safety/selector, magazine release, and bolt catch. An AR-style takedown pin layout simplifies maintenance and configuration.
The custom setup centers on control and handling. The SB Tactical telescoping brace uses a twin-rod guide system for compact, repeatable positioning, paired with a Manticore Arms rear interface/top plate. Up front, a BCM KAG hand stop provides a consistent index on the free-float handguard.
Charging and fire control are upgraded with a Radian Raptor MPX ambidextrous, extended charging handle and a Hyperfire skeletonized aftermarket trigger. These components deliver ambidextrous manipulation and a refined trigger system tailored to the platform.
The pistol wears a free-float aluminum M-LOK handguard under a full-length Picatinny top rail, with low-profile folding iron sights installed. The barrel is threaded and fitted with a compact spiral/ported muzzle device.
The aluminum-alloy receiver has a hard-coat anodized black finish, with markings that include SIG SAUER INC NEWINGTON NH USA and SIG MPX MULTI-CAL. Capacity is 30+1, and this package includes five factory SIG MPX 30-round polymer magazines. Made in the USA.




