Geissele URG-I AR-15 Upper, .223 Rem/5.56 NATO

The Geissele URG-I is a complete AR-15 upper built as a near-clone of the USASOC URGI upper receiver group. It pairs Geissele's Super Modular Rail MK16 handguard with a hammer-forged, chrome-lined steel barrel and a carbine gas system for use with modern 5.56 ammunition. The design emphasizes durability and compatibility with AR-15 platforms.

Key Specifications

• The model is URG-I.
• The cartridge/chambering is .223 REM/5.56 NATO.
• The barrel is described as Chrome Lined Steel.
• The twist rate is 1:7.
• The receiver description is MIL-Spec M4.
• The handguard finish is DDC (Desert Dirt Color).
• The handguard interface is M-LOK.
• The barrel finish is Black.
• The overall finish is Anodized.
• Designed to fit AR-15 platforms.

This upper brings the URGI silhouette and Geissele engineering together for shooters who need a robust, service-oriented AR-15 upper. With a Super Modular Rail MK16 handguard and durable chrome-lined barrel construction, it suits applications that demand consistent performance and modularity on a modern 5.56 platform.