MCX-RATTLER LT 300 AAC BLACKOUT SBR SEMI-AUTO RIFLE – MCX-RATTLER LT 300 AAC BLACKOUT 6.75” BBL (1)30RD MAG BLACK

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SIG SAUER MCX-RATTLER LT 300 AAC BLACKOUT SBR SEMI-AUTO RIFLE
 
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 barrel and is now fully compatible with all MCX barrels and handguards making it the ultimate modular package.
 
FEATURES:
  • 6.75 Cold Hammer Forged Barrel for Ultra Compact Design
  • Fully Ambidextrous Controls
  • Interchangeable Barrels, Now Compatible With All LT Barrels and Handguards
  • SIG Flat Blade Match Trigger
  • SIG SLX/SLH Suppressor-Ready Flash Hider
SPECIFICATIONS:
  • CALIBER: 300 AAC Blackout
  • BARREL LENGTH: 6.75 in [171.45 mm]
  • BARREL MATERIAL: Cold Hammer Forged Steel
  • TWIST RATE: 1:5
  • THREADS: 5/8 in -24, Tapered Shoulder
  • MUZZLE DEVICE: Flash Hider
  • ACTION TYPE: Semi-Auto
  • OPERATING SYSTEM: Short-Stroke-Piston
  • STOCK TYPE: Folding Minimalist Plus
  • GRIP TYPE: AR-Compatible PDW
  • TRIGGER TYPE: SIG Flat Blade Match
  • TRIGGER SHAPE: Flat
  • FOREND TYPE: Alloy
  • ACCESSORY RAIL: M-LOK/Picatinny
  • MAG TYPE: AR-15
  • MAGS INCLUDED: (1) 30 Round Polymer Mag
  • COLOR: Black
  • RECEIVER FINISH: Anodized
  • OVERALL LENGTH: 24.9 in
  • FOLDED LENGTH: 17.1 in
  • OVERALL WIDTH: 2.25 in
  • HEIGHT: 7.4 in
  • WEIGHT: 5.8 LB
Description

Original price was: $2,499.99.Current price is: $2,179.00.

SIG SAUER MCX-RATTLER LT 300 AAC BLACKOUT SBR SEMI-AUTO RIFLE
 
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 barrel and is now fully compatible with all MCX barrels and handguards making it the ultimate modular package.
 
FEATURES:
  • 6.75 Cold Hammer Forged Barrel for Ultra Compact Design
  • Fully Ambidextrous Controls
  • Interchangeable Barrels, Now Compatible With All LT Barrels and Handguards
  • SIG Flat Blade Match Trigger
  • SIG SLX/SLH Suppressor-Ready Flash Hider
SPECIFICATIONS:
  • CALIBER: 300 AAC Blackout
  • BARREL LENGTH: 6.75 in [171.45 mm]
  • BARREL MATERIAL: Cold Hammer Forged Steel
  • TWIST RATE: 1:5
  • THREADS: 5/8 in -24, Tapered Shoulder
  • MUZZLE DEVICE: Flash Hider
  • ACTION TYPE: Semi-Auto
  • OPERATING SYSTEM: Short-Stroke-Piston
  • STOCK TYPE: Folding Minimalist Plus
  • GRIP TYPE: AR-Compatible PDW
  • TRIGGER TYPE: SIG Flat Blade Match
  • TRIGGER SHAPE: Flat
  • FOREND TYPE: Alloy
  • ACCESSORY RAIL: M-LOK/Picatinny
  • MAG TYPE: AR-15
  • MAGS INCLUDED: (1) 30 Round Polymer Mag
  • COLOR: Black
  • RECEIVER FINISH: Anodized
  • OVERALL LENGTH: 24.9 in
  • FOLDED LENGTH: 17.1 in
  • OVERALL WIDTH: 2.25 in
  • HEIGHT: 7.4 in
  • WEIGHT: 5.8 LB

Out of stock

SKU 430113877 Category

Description

SIG SAUER MCX-RATTLER LT 300 AAC BLACKOUT SBR SEMI-AUTO RIFLE
 
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 barrel and is now fully compatible with all MCX barrels and handguards making it the ultimate modular package.
 
FEATURES:
  • 6.75 Cold Hammer Forged Barrel for Ultra Compact Design
  • Fully Ambidextrous Controls
  • Interchangeable Barrels, Now Compatible With All LT Barrels and Handguards
  • SIG Flat Blade Match Trigger
  • SIG SLX/SLH Suppressor-Ready Flash Hider
SPECIFICATIONS:
  • CALIBER: 300 AAC Blackout
  • BARREL LENGTH: 6.75 in [171.45 mm]
  • BARREL MATERIAL: Cold Hammer Forged Steel
  • TWIST RATE: 1:5
  • THREADS: 5/8 in -24, Tapered Shoulder
  • MUZZLE DEVICE: Flash Hider
  • ACTION TYPE: Semi-Auto
  • OPERATING SYSTEM: Short-Stroke-Piston
  • STOCK TYPE: Folding Minimalist Plus
  • GRIP TYPE: AR-Compatible PDW
  • TRIGGER TYPE: SIG Flat Blade Match
  • TRIGGER SHAPE: Flat
  • FOREND TYPE: Alloy
  • ACCESSORY RAIL: M-LOK/Picatinny
  • MAG TYPE: AR-15
  • MAGS INCLUDED: (1) 30 Round Polymer Mag
  • COLOR: Black
  • RECEIVER FINISH: Anodized
  • OVERALL LENGTH: 24.9 in
  • FOLDED LENGTH: 17.1 in
  • OVERALL WIDTH: 2.25 in
  • HEIGHT: 7.4 in
  • WEIGHT: 5.8 LB

Additional information

Weight 7 lbs
Finish

Black

Rear Sight

None

Magazine Included

1 x 30-Round

Stock Material

Aluminum

Barrel Length

6.75''

Make/Model

Sig Sauer, MCX

Action Type

Semi-Auto

Muzzle

Flash Hider

Model

MCX

Front Sight

None

Weight

5.8 lbs

Length

24.9''

Capacity

30+1-Round

Cartridge

CCP_300 AAC Blackout

Magazine Type

Removable

Make

Sig Sauer

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.