Geissele Super Duty MOD1 Complete Upper, 5.56 NATO, 10.3in

The Geissele Super Duty MOD1 is a complete upper assembly designed for the AR-15 platform. It is chambered for .223 Rem/5.56 NATO and features a 10.3 inch barrel length for compact handling. The upper is finished in an anodized Desert Dirt Color (DDC) and ships as a flat-top configuration suitable for optics and accessory mounting. It is offered as a complete, drop-in upper to pair with a compatible AR-15 lower.

Key Specifications

• The model designation is SUPER DUTY MOD1.
• The upper is designed to fit the AR-15 platform.
• The external finish is Anodized in Desert Dirt Color (DDC).
• The chambering/cartridge is .223 Rem / 5.56 NATO.
• The barrel twist rate is 1:7.
• The barrel length measures 10.3 inches.
• The product ships as a Complete Upper assembly.
• The top is configured as a Flat Top for mounting optics and accessories.
• The barrel/handguard contour is listed as Geissele.
• The style is listed as Complete.

Built to provide a compact, serviceable upper for AR-15 builders and users, the Super Duty MOD1 pairs a short 10.3 inch barrel with a robust Geissele contour and DDC finish for a durable, optics-ready package. Its combination of chambering, twist rate, and flat-top compatibility make it a versatile choice for shooters seeking a high-quality complete upper for duty-style, range, or compact-purpose builds.