MK16 Urg-I Complete Upper Receivers 5.56mm - MK16 11.5" URGI Upper CHF Barrel, Ach, Rebcg 5.56mm Ddc
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Geissele
Overview
The Geissele Automatics Mk16 Urg-I Complete Upper Receiver is designed for the AR-15 platform, featuring an 11.5-inch barrel chambered in 5.56 NATO. This complete assembly incorporates a carbine-length gas system, making it suitable for a variety of applications while maintaining reliable cycling and performance. Builders often choose this upper for compact builds that prioritize maneuverability without sacrificing firepower.
Specifications
MK16 Urg-I Complete Upper Receivers 5.56mm - MK16 11.5" URGI Upper CHF Barrel, Ach, Rebcg 5.56mm Ddc
Available Merchants(6)
Prices checked
Price Alert
October 2026 on GunPartPicker
Geissele MK16 Urg-I Complete Upper Receivers 5.56mm - MK16 11.5" URGI Upper CHF Barrel, Ach, Rebcg 5.56mm Ddc ranked #16 of the 844 upper receivers builders added on GunPartPicker in October 2026, behind the Tacfire 20" Complete Upper Assembly .308 Win 1:10, Black - BU-308-20, with about 1 in every 111 upper receivers added to builds. Up from #38 in September. Builds with this upper receiver are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
It was out of stock everywhere we track every time we checked in October 2026, and today only Palmetto State Armory has it in stock. Buying today, the lowest price is $1,479.99 at Palmetto State Armory.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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