Geissele Automatics Super Duty MOD 1 Heavy Barrel 5.56 NATO Complete Upper Receiver - 14.5" - DDC
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Overview
The Geissele Automatics Super Duty MOD 1 Heavy Barrel Complete Upper Receiver is a fully assembled unit designed for the AR-15 platform, featuring a 14.5-inch barrel chambered in 5.56 NATO. This upper receiver is engineered for durability and reliable performance, making it an excellent choice for builders looking to create a versatile and robust firearm. It commonly appears in builds focused on the 5.56 NATO caliber, catering to a wide range of shooting applications.
Specifications
Geissele Automatics Super Duty MOD 1 Heavy Barrel 5.56 NATO Complete Upper Receiver - 14.5" - DDC
Build history on GunPartPicker
Builders on GunPartPicker first added the Geissele Automatics Super Duty MOD 1 Heavy Barrel 5.56 NATO Complete Upper Receiver - 14.5" - DDC to a build in July 2026.
It was out of stock everywhere we track every time we checked in October 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $1,450 at Optics Planet for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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