Geissele Super Duty MOD1 | 5.56×45 13.9″ Upper

Manufactured for the AR-15 platform, the Geissele Super Duty MOD1 is a complete upper designed to prioritize accuracy and reliability. The assembly combines a 13.9″ barrel (pinned to a 16″ overall length as listed) with an M-LOK handguard and an anodized finish. This upper is intended for precision target work and competition shooting where component-level consistency matters.

Product Specifications

• The barrel length is 13.9″ (pinned, 16″ OAL).
• The caliber/cartridge is listed as .223 Rem / 5.56 NATO.
• The finish is specified as Anodized.
• The handguard interface is M-LOK.
• The listed fit is AR-15.
• The model name is SUPER DUTY MOD1.
• The product type is Upper.
• The subcategory is Complete Upper Receivers.
• The exterior color is Desert Dirt Color.
• The listed overall length/length entry is 13.9″.
• The contour is specified as Geissele.
• The style is listed as Complete.
• The UPC is 810081133999.

The Super Duty MOD1 complete upper delivers a no-nonsense parts set for shooters who demand a precise fit and proven components on the AR-15 platform. With an M-LOK interface and anodized finish, it is built to integrate with common AR-15 lowers and accessory layouts while supporting accuracy-focused uses such as target and competitive shooting.