SIG Sauer MCX PSB .223 Remington/5.56 NATO Pistol

Description

Product Overview

The SIG Sauer MCX PSB is a semi-automatic AR pistol chambered for both .223 Remington and 5.56 NATO. Its 11.5-inch threaded barrel and two-position gas block support reliable operation with supersonic and subsonic loads, making it well suited to suppressed configurations. The MCX operating system eliminates the need for a traditional buffer tube, allowing the included pistol stabilizing brace to fold to the side. A lightweight aluminum KeyMod handguard, Picatinny top rail, AR-style controls, and compatibility with standard STANAG magazines give this compact pistol practical flexibility for customization and use. The receiver features a black hard coat anodized finish, while the grip and brace use black polymer construction.

Key Features

• Short 11.5-inch barrel provides a compact platform for close-quarters and suppressed applications.
• Two-position gas block allows quick adjustment between subsonic and supersonic ammunition.
• Buffer-tube-free recoil system supports the folding pistol stabilizing brace.
• Picatinny top rail provides a solid mounting surface for optics and accessories.
• Accepts standard STANAG-pattern magazines for broad magazine compatibility.
• Ambidextrous manual safety and AR-style controls provide familiar handling.

The SIG Sauer MCX PSB delivers compact, reliable performance with flexible optic compatibility and support for standard STANAG magazines.