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Sig Sauer MCX Rattler-LT 5.56 NATO SBR - 7.75"

Short-Barrel Rifle

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Sig Sauer MCX Rattler-LT 5.56 NATO SBR - 7.75"


All of the breakthrough features of the original MCX-Rattler now in a more modular, more capable package. Designed to meet the needs of Special Operations forces, the MCX-Rattler LT features fully ambidextrous controls, including an ambidextrous bolt-catch, bolt-release an adjustable gas piston for suppressed and unsuppressed use, and is fitted with the SIG QD suppressor-ready flash-hider and a flat-blade trigger for ultimate control.

The MCX-Rattler LT also has either a cold hammer forged 6 or 7 3/4 barrel and is now fully compatible with all MCX barrels and handguards making it the ultimate modular package.


  • 7.75in cold hammer forged barrel for ultra compact design
  • Fullly ambidextrous controls
  • Interchangable barrels, now compatible with all LT barrels and handguards
  • SIG Flatblade match trigger
  • SIG SLX/SLH suppressor-ready flash hider


  • Caliber: 5.56 NATO
  • Sights: Optics Ready
  • Barrel Length (in):  7.75
  • Mags Included: (1) 30rd Polymer Mag
  • Mag Type: AR-15
  • Action Type: Semi-Auto
  • Stock Type: Folding Minimalist Plus
  • Barrel Material: Cold Hammer Forged Carbon Steel
  • Trigger Type: 2-Stage Match
  • Trigger Shape: Flat
  • Twist Rate: 1:7
  • Forend Type: Alloy
  • Grip Type: PDW
  • Receiver Finish: Anodized
  • Overall Length: 25.75 in [654.05 mm]
  • Overall Width: 2.25 in [57.2 mm]
  • Height: 7.4 in (187.2 mm)
  • Threads: 5/8 in - 24
  • Accessory Rail: M1913
  • Forward Assist: No
  • Operating System: Short-Stroke-Piston
  • Adjustable Gas System: Yes
  • Weight: 6.2 lbs (2.8 kg)
  • Collapsed Length: N/A
More Information
Product Type Short-Barrel Rifle
Manufacturer Sig Sauer
Thread Pitch 5/8x24
Twist Rate 1:7
Color Black
Mount M-LOK
Barrel Length 7.75"
Caliber 5.56 NATO
Threaded Yes

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