SIG Sauer MCX Rattler LT .300 BLK 6.75in Pistol

The SIG Sauer MCX Rattler LT is a semi-automatic pistol chambered in .300 AAC Blackout. It combines a compact 6.75-inch cold hammer-forged barrel with fully ambidextrous controls, a folding pistol brace, and an M-LOK handguard for a configurable platform.

The aluminum-frame pistol features a black finish, rubber grip material, a removable 30-round magazine, and a Picatinny optic rail. Its threaded barrel is fitted with a SIG QD suppressor-ready flash hider, while the flat-blade two-stage match trigger provides a defined trigger system for range use.

Key Specifications

• The chambering is .300 AAC Blackout for compatibility with the listed cartridge.
• The action is semi-automatic.
• The barrel measures 6.75 inches and is cold hammer forged.
• The barrel has a 1:5-inch twist rate.
• The pistol includes a folding pistol brace.
• The frame is made from aluminum.
• The pistol includes a removable 30-round magazine.
• The package includes one magazine.
• The barrel is threaded and fitted with a SIG QD suppressor-ready flash hider.
• The trigger is a flat-blade two-stage match design.

With its short barrel, folding brace, ambidextrous controls, and modular handguard, the MCX Rattler LT offers a practical .300 AAC Blackout configuration for controlled range work and specialized sporting applications. The included magazine and established MCX layout make it a focused option for shooters seeking a compact, adaptable pistol platform.

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