Geissele Super Duty MOD1 AR-15 Upper 5.56 NATO 13.9″ Black

The Geissele Automatics Super Duty MOD1 is a complete AR-15 upper built for shooters who demand durable, precision-oriented components. Chambered for .223 Rem / 5.56 NATO and finished in black anodize, this upper combines a compact 13.9″ barrel configuration with a pinned setup yielding a 16″ overall length. The package includes an M-LOK handguard and a P&W compensator as specified in the product name. Designed and finished for reliable service on AR-15 platforms.

Key Specifications

• The cartridge is .223 Rem / 5.56 NATO for common AR-15 chambering and ammunition compatibility.
• The barrel is 13.9″ Pinned (16″ OAL) to provide a compact profile while meeting overall length considerations.
• The finish is Anodized for corrosion resistance and consistent appearance.
• The handguard uses M-LOK attachment points for modular accessory mounting.
• The product color is Black for a low-profile, tactical aesthetic.
• The unit is a Complete upper intended to mate with AR-15 lower receivers.
• The fit is specified as AR-15 for compatibility with standard AR-15 lower assemblies.
• The model designation is SUPER DUTY MOD1 from Geissele Automatics.
• The contour is listed as Geissele, reflecting the manufacturer’s barrel/profile specification.
• The product type is Upper as a drop-in complete upper assembly.

Combining high-quality Geissele design with practical features like an M-LOK handguard, anodized finish, and a pinned 13.9″ barrel, the Super Duty MOD1 complete upper delivers a refined, purpose-built option for AR-15 owners seeking a reliable, compact configuration. Its specification set supports a range of modern shooting applications while maintaining compatibility with standard AR-15 components.