Sig Sauer PM400 11.5" AR Pistol SA 5.56 NATO FDE AR Pistol

Description

Product Overview

Sig Sauer’s PM400 AR pistol combines a direct gas impingement system with Sig516-derived design choices for dependable operation and controlled handling. This 11.5-inch, chrome-lined contoured barrel is paired with an A2 flash suppressor and FDE Magpul MOE Enhanced forend and MOE textured pistol grip, delivering an all-FDE build. A 1913 Picatinny flat-top upper supports optics mounting, while Sig Sauer flip-up rear iron sights provide a solid co-witness option. Ambidextrous controls and integral ambidextrous QD sling mounts round out a practical, ergonomic pistol configuration.

Key Features

• Direct gas impingement AR-style pistol platform for reliable semi-automatic cycling
• 11.5-inch chrome-lined contoured barrel with an A2 flash suppressor
• FDE Magpul MOE Enhanced forend and MOE textured pistol grip for a consistent color-matched setup
• 1913 Picatinny flat-top upper supports optics mounting
• Sig Sauer locking flip-up rear iron sights with a complete iron sight package
• Ambidextrous controls and integral ambidextrous QD sling mounts for versatile carry and use

If you’re building or upgrading an AR-style pistol in 5.56 NATO with an 11.5-inch barrel, the Sig Sauer PM400 offers a well-rounded setup ready for either irons or optics.