Sig Sauer MCX-Rattler LT Upper Receiver .300 AAC Blackout 6.75 Barrel

Overview

Sig Sauer MCX-Rattler LT Upper Receiver Features The Sig Sauer MCX-Rattler LT Upper Receiver is built around a 6.75 cold hammer forged barrel with 5/8x24 threading and an adjustable gas system optimized for suppressed use with compatible SLX and SLH suppressors across both suppressed and unsuppressed 300 Blackout loads. The dual rod recoil assembly eliminates the standard buffer system to enable folding stock capability on any M4/AR-15 lower while a tapered bolt design and quick change barrel system deliver enhanced lockup reliability and fast field reconfiguration across the MCX-RATTLER LT s modular platform architecture. The complete 300 Blackout upper ships with an ambidextrous charging handle with gas deflector and bolt carrier group for immediate drop-in installation on any M4/AR-15 spec lower without additional components. Full parts interchangeability with the MCX-SPEAR LT allows any compatible barrel or handguard to swap directly onto the Rattler LT for easy caliber and length conversions and the Clutch-Lok tapered QD flash hider transitions directly to SLX and SLH suppressor configurations for a seamless suppressor-ready setup. Sig Sauer MCX-Rattler LT Upper Receiver Specifications Manufacturer: Sig Sauer Model: MCX-Rattler LT Upper Receiver Caliber: 300 Blackout Barrel Length: 6.75 Barrel Type: Cold Hammer Forged/Threaded Thread Pitch: 5/8x24 Muzzle Device: Clutch-Lok Tapered QD Flash Hider Gas System: Adjustable Recoil System: Dual Rod Receiver: Flat Top Finish: Anodized Black Compatible Lowers: M4/AR-15 Spec Compatible Suppressors: SLX/SLH Compatible Parts: MCX-SPEAR LT Barrels and Handguards Includes: Ambidextrous Charging Handle w/Gas Deflector Bolt Carrier Group