MK111 Mod 2-M 223 Wylde Complete Upper Receiver - MK111 Mod 2-M 223 Wylde 11.85" Bbl Complete Upper
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Primary Weapon Systems
Overview
The Mk111 Mod 2-M .223 Wylde Complete Upper Receiver from Primary Weapon Systems offers a fully assembled upper with an 11.85-inch barrel, designed to handle both .223 Remington and 5.56 NATO ammunition efficiently. The .223 Wylde chamber allows for versatile performance, making it suitable for various loads, which can enhance accuracy and reliability in your builds. This upper is commonly found in compact AR-15 builds aimed at maximizing maneuverability while maintaining caliber flexibility.
Specifications
MK111 Mod 2-M 223 Wylde Complete Upper Receiver - MK111 Mod 2-M 223 Wylde 11.85" Bbl Complete Upper
Available Merchants(6)
Prices checked
Price Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the Primary Weapon Systems MK111 Mod 2-M 223 Wylde Complete Upper Receiver - MK111 Mod 2-M 223 Wylde 11.85" Bbl Complete Upper to a build in February 2026.
It was in stock most days in September 2026, but today only Brownells has it in stock. Prices barely moved in September 2026, holding around $1,351.40, so there haven't been real sales lately. Buying today, the lowest price is $1,399.95 at Brownells, above September's low of $1,324.37, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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