Primary Weapons MK116 PRO Complete Upper Receiver 16.1" Black
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Primary Weapon Systems
Overview
The Primary Weapons Mk116 Pro Complete Upper Receiver is designed for the AR-15 platform, featuring a 16.1-inch barrel with a 1:8 twist rate, ideal for stabilizing a wide range of bullet weights in .223 Wylde caliber. This complete assembly allows builders to easily integrate it into their projects without the need for additional components, ensuring a streamlined setup. This upper is commonly found in builds that prioritize versatility and performance with .223 Wylde ammunition.
Specifications
Primary Weapons MK116 PRO Complete Upper Receiver 16.1" Black
September 2026 on GunPartPicker
Primary Weapons MK116 PRO Complete Upper Receiver 16.1" Black ranked #267 of the 615 upper receivers builders added on GunPartPicker in September 2026.
It was out of stock everywhere we track for all of September 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $577.99 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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