SIG MCX Rattler LT 300 blackout 6.75 inch SBR rifle

SIG SAUER MCX-RATTLER LT 300 BLACKOUT 6.75" SBR

Sig Sauer
SKU:
RMCX-300B-6B-LT-SBR
|
UPC:
798681682676
Availability:
Ships within 2-3 business days.
$2,499.99
(No reviews yet)
Current Stock:
Adding to cart… The item has been added
Description

The SIG SAUER MCX-RATTLER LT is the next evolution of the ultra-compact MCX platform, delivering enhanced modularity, improved performance, and mission-ready reliability in a highly compact package. Built for demanding applications, the Rattler LT takes the proven design of the original Rattler and expands its capabilities with full compatibility across the MCX LT ecosystem.

Chambered in .300 Blackout and featuring a cold hammer forged 6.75" barrel with a fast 1:5 twist rate, the Rattler LT is optimized for suppressed performance while maintaining exceptional terminal effectiveness in a compact form factor. The short-stroke gas piston system with adjustable gas ensures reliable cycling whether running suppressed or unsuppressed.

Fully ambidextrous controls—including bolt catch and release—provide intuitive handling for any shooter. The rifle is equipped with a SIG flat blade match trigger for enhanced control and precision, while the SIG QD suppressor-ready flash hider makes it ready for modern suppressor setups.

With interchangeable barrels and compatibility with all MCX LT handguards, the Rattler LT offers unmatched modularity. Its folding minimalist stock and compact overall length make it ideal for confined environments, transport, and rapid deployment scenarios.

Backed by the SIG SAUER Infinite Guarantee™, the MCX-RATTLER LT is built for long-term reliability and performance without compromise.

Key Features:

  • Ultra-compact 6.75" cold hammer forged barrel (1:5 twist)
  • Chambered in .300 Blackout
  • Short-stroke gas piston system with adjustable gas
  • Fully ambidextrous controls
  • SIG flat blade match trigger
  • Suppressor-ready QD flash hider
  • Compatible with all MCX LT barrels and handguards
  • Folding minimalist stock for compact storage
SKU                               RMCX-300B-6B-LT-PCB
CALIBER                        300 BLK
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
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) 30rd Polymer Mag
RECEIVER FINISH            Black Anodized
OVERALL LENGTH             24.9 in (632 mm)
COLLAPSED LENGTH         N/A
FOLDED LENGTH               17.1 in
OVERALL WIDTH               2.25 in [57.2 mm]
HEIGHT                              7.4 in (187.2 mm)
WEIGHT                             5.8 lbs (2.6 kg)
FORWARD ASSIST              No
ADJUSTABLE GAS SYSTEM Yes
Additional Information
FFL:
YES