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SIG SAUER MCX Rattler 300BLK Pistol - 5.5" (No Brace)

Pistol Caliber Carbine

Out of stock

FFL Required Before Shipping.

Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.


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. 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 is the ideal choice for fast-moving operators.


  • Caliber: 300 BLK
  • Barrel Length: 5.5 in (140 mm)
  • Mags Included: (1) 30rd Polymer Mag
  • Mag Type: AR-15
  • Action Type: Semi-Auto
  • Barrel Material: Carbon Steel
  • Trigger Type: SIG Enhanced
  • Twist Rate: 1:5
  • Grip Type: N/A
  • Overall Length: 23 in [584 mm]
  • Overall Width: 2.8 in [71 mm]
  • Height: 8.0 in (203 mm)
  • Threads: N/A
  • Accessory Rail: M-LOK
  • Operating System: Gas Piston
  • Weight: 5.1 lbs (2.7 kg)


  • Manual
  • Cable Lock
  • (1) 30RD Magazine
More Information
Product Type Pistol Caliber Carbine
Manufacturer Sig Sauer
Twist Rate 1:5
Color Black
Barrel Length 5.5"
Caliber 300 Blackout
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