Geissele SUPER DUTY MOD1 AR-15 Complete Upper, 5.56×45, 12.5″

The Geissele Automatics Super Duty MOD1 is a complete upper assembly built for the AR-15 platform. It is chambered for .223 REM/5.56 NATO and ships with a 12.5″ barrel and a flat-top receiver. The upper features a black anodized finish and Geissele contouring intended to support accuracy and consistent operation in demanding use.

Key Specifications

• The model is SUPER DUTY MOD1.
• The caliber is .223 REM/5.56 NATO.
• The barrel measures 12.5″.
• The barrel twist is 1:7.
• The finish is Anodized.
• The color is Black.
• The receiver configuration is Flat Top.
• The fit is AR-15.
• The subcategory is Complete Upper Receivers.
• The contour is Geissele.

As a factory-built complete upper from Geissele, the Super Duty MOD1 offers a precise, out-of-the-box option for builders and enthusiasts seeking a durable, high-quality component. Its combination of a short 12.5″ barrel, proven twist rate, and Geissele engineering makes it a solid choice for projects that demand consistency and refined performance.