Sig Sauer MCX Regulator, Semi-Auto Rifle RMCXR762R16B, 7.62x39mm, 16″, SGA 590 Stock, 10 Rds

SIG SAUER MCX-REGULATOR Rifle – 7.62x39mm, 16″ Barrel, Magpul SGA 590 Stock, Coyote Finish, 10-Round

The SIG SAUER MCX-REGULATOR RMCXR762R16B is a versatile semi-automatic rifle chambered in 7.62x39mm, combining the proven MCX platform with a traditional rifle configuration designed for hunting, ranch use, and general-purpose shooting. Built around SIG SAUER’s short-stroke gas piston system, the MCX-REGULATOR offers modern reliability with the familiar handling characteristics of a conventional stock rifle.

The MCX-REGULATOR features the MCX-SPEAR LT upper receiver and piston operating system paired with a newly designed lower receiver and a Magpul SGA Mossberg 500/590-style stock. This configuration provides a more traditional rifle profile while retaining MCX modularity, including compatibility with MCX upper receivers and fully ambidextrous controls.

Chambered in 7.62x39mm, this model features a 16-inch cold hammer forged barrel, Coyote/NiR FDE-style finish, integrated ARCA rail, M-LOK handguard, two-stage match trigger, and a 10-round magazine. The MCX-REGULATOR is designed as a lightweight and adaptable rifle platform with enhanced ergonomics for field applications.

Specifications

Key Features

• Chambered in 7.62x39mm
• Full-size 16-inch barrel
• Advanced MCX short-stroke piston operating system
• Traditional Magpul SGA 590 stock configuration
• Durable Coyote finish
• Cold hammer forged barrel
• Fully ambidextrous controls
• Two-stage match trigger
• Integrated ARCA mounting rail
• M-LOK accessory compatibility
• Modular MCX upper receiver design
• 10-round magazine capacity
• Designed for hunting, ranch, and field applications

The SIG SAUER MCX-REGULATOR 7.62x39mm combines the reliability and modularity of the MCX family with a classic stock configuration, creating a lightweight, adaptable rifle suited for shooters who prefer traditional ergonomics with modern piston-driven performance.