SIG Sauer MCX Rattler Canebrake .300 AAC Blackout, 5.5-Inch, FDE/Black — NFA Suppressor & Pistol Combo Package
This MCX Rattler Canebrake pairs SIG Sauer's micro .300 AAC Blackout platform with a SIG SRD762Ti 30-caliber suppressor in a single NFA-regulated combo. It features the Canebrake's extended free-float handguard designed to accommodate a tucked suppressor, a 5.5-inch barrel, and ambidextrous controls. The two-tone FDE receivers with a black handguard, segmented 12 o'clock Picatinny top rails, and side-folding brace round out a compact, purpose-built configuration.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are handling marks from previous use. The 7.62mm inert training device is seized on the barrel and will require high-level gunsmithing to remove. One screw on the bottom of the handguard is stripped.
What’s Included
- SIG Sauer SRD762Ti 30 Cal Suppressor (Included Suppressor Serial No: 61E013840)
- 7.62mm Inert Training Device — NOT INTENDED FOR SUPPRESSION (installed)
- Angled handstop (installed on handguard)
- Two 30-round Magpul PMAG AR 300 B polymer magazines for 300 BLK
The Canebrake configuration uses an extended free-float handguard with slotted vents that allows a suppressor to tuck under the rail, paired here with a 5.5-inch .300 AAC Blackout barrel. The receiver and handguard top rails are segmented (not continuous), and no iron sights are installed.
Built on the MCX short-stroke gas piston system, this Rattler includes an ambidextrous charging handle with extended latches and an ambidextrous safety selector. It has a left-side bolt catch and an ambidextrous magazine release for efficient control manipulation.
The brace mounts via the rear 1913 interface and folds to the side. Receivers are finished in tan/FDE, contrasted by a black aluminum handguard. The upper is marked "RATTLER," and the magwell is marked "SIG MCX MULTI-CALIBER."
This NFA-regulated suppressor and pistol combo package includes a SIG Sauer SRD762Ti 30-caliber suppressor and two 30-round Magpul PMAG AR 300 B magazines. A 7.62mm inert training device is also included for non-suppressed training and fitment applications.