Geissele Super Duty MOD1 5.56 NATO 16" 1:7" CHF Chrome Lined Bbl DDC Complete Upper Receiver Group 08-548S

Geissele Super Duty MOD1 5.56 NATO 16" 1:7" CHF Chrome Lined Bbl DDC Complete Upper Receiver Group (SKU: 08-548S) is engineered for durability and precision in even the most demanding settings. It features a 16-inch Cold Hammer Forged chrome-lined barrel, built to exceed military specifications for wear resistance and accuracy retention. This upper comes complete with a mid-length gas system and Geissele's Super Compact Gas Block, ensuring reliable cycling and minimal recoil impulse. The upper is finished in Desert Dirt Color (DDC) and includes the full suite of Super Duty components for superior function and feel.

This upper includes Geissele’s REBCG (Reliability Enhanced Bolt Carrier Group), which uses a precision-machined cam path and a properly torqued and staked gas key to maximize long-term performance. It also comes equipped with the Airborne Charging Handle, optimized for ambidextrous use and designed to reduce snagging on gear. A 13.5-inch MK16 M-LOK handguard offers extensive accessory space while maintaining a slim profile. With its Type 3 Hardcoat Anodized 7075-T6 aluminum upper and carefully matched components, this is a top-tier choice for professional-grade AR builds.

• Caliber: 5.56 NATO
• Barrel Length: 16 inches
• Barrel Twist Rate: 1:7"
• Barrel Type: CHF, Chrome Lined, Mil-Spec
• Gas System: Mid-Length with Super Compact Gas Block
• Rail: 13.5" MK16 M-LOK, Desert Dirt Color (DDC)
• Includes REBCG (Reliability Enhanced Bolt Carrier Group)
• Includes Airborne Charging Handle
• Upper Receiver: 7075-T6 Aluminum, Type 3 Hardcoat Anodized