Geissele SUPER DUTY MOD1 Complete Upper 5.56 12.5″ DDC

The Geissele Automatics SUPER DUTY MOD1 is a complete AR-15 upper assembly built for the .223 REM/5.56 NATO cartridge. It ships as a ready-to-install complete upper with a 12.5-inch barrel and a 1:7 twist rate. The receiver is a flat-top configuration finished in an anodized Desert Dirt Color for a cohesive appearance with modern AR-15 builds.

Key Specifications

• The caliber is .223 REM/5.56 NATO.
• The barrel length is 12.5 inches.
• The barrel twist rate is 1:7.
• The finish is Anodized.
• The color is Desert Dirt Color.
• The receiver style is Flat Top.
• The model designation is SUPER DUTY MOD1.
• The product type is a Complete Upper for the AR-15 platform.
• The barrel contour is Geissele.

Configured for compact AR-15 builds, the SUPER DUTY MOD1 complete upper balances a shorter barrel length with a full-featured flat-top receiver to support optics and modular accessories. Its anodized Desert Dirt Color finish and Geissele contour barrel make it a practical choice for users seeking a cohesive, factory-ready upper for range and field applications.