The MCX Rattler LT 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; adjustable gas piston for suppressed and unsuppressed use; SIG QD suppressor-ready flash-hider and flat-blade trigger for ultimate control. The MCX-Rattler LT has a cold hammer forged barrel barrel and is fully compatible with all MCX barrels and handguards.
| Manufacturer | Sig Sauer |
| Model | MCX Rattler LT Pistol |
| Caliber | 5.56 NATO / 223 Rem |
| Type | Pistol |
| Action | Semi-Auto |
| Capacity | 30+1 |