SIG MCX Rattler PSB 300 AAC Blackout Handgun

Item No. 79868158130


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Product Description


Rapid deployment, thin, agile, and precise. This is the SIG MCX Rattler. Featuring a 5.5" PDW barrel, the MCX platform has never been more compact or accessible. Ready to go wherever it's needed, the MCX Rattler PSB features a 3-position telescoping pistol brace for stability and easy concealment. This gun was designed from the ground up to be as discrete as possible, while retaining all the robust capabilities of the MCX. Free-floating M-LOK handguards matched with a PDW upper and 5.5" barrel, the MCX Rattler PSB is the ideal choice for fast-moving operators.


  • 5.5" Barrel with PDW upper
  • 3-Position Telescoping PSB
  • Free floating M-LOK handguard


  • Caliber: 300 Blk
  • Barrel Length: 5.5"
  • Overall Length: 19.3"
  • Mags Included: (1) 30rd Aluminum Mag
  • Mag Type: AR-15
  • Action Type: Semi-Auto
  • Stock Type: Telescoping 3-Position Brace
  • Barrel Material: Carbon Steel
  • Trigger Type: SIG Enhanced
  • Trigger Weight: 5.5-9 lbs.
  • Twist Rate: 1:5
  • Overall Width: 2.8"
  • Height: 8"
  • Accessory Rail: M-LOK
  • Operating System: Gas Piston
  • Weight: 5.1 lbs.

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