AR-15 MK1 Mod 1-M Upper Receiver Assembly 223 Wylde M-LOK - MK111 Mod 1-M Upper Receiver 11.85 Barrel .223 Wylde
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Primary Weapon Systems
Overview
The AR-15 Mk1 Mod 1-M Upper Receiver Assembly from Primary Weapon Systems is a complete upper designed for the AR-15 platform, featuring an 11.85-inch barrel chambered in .223 Wylde. This caliber allows for the safe firing of both .223 Remington and 5.56 NATO ammunition, making it versatile for various shooting applications. Ideal for compact builds or those looking to enhance maneuverability, this upper is often utilized in short-barreled rifles and personal defense firearms.
Specifications
AR-15 MK1 Mod 1-M Upper Receiver Assembly 223 Wylde M-LOK - MK111 Mod 1-M Upper Receiver 11.85 Barrel .223 Wylde
Price and stock
The Primary Weapon Systems AR-15 MK1 Mod 1-M Upper Receiver Assembly 223 Wylde M-LOK - MK111 Mod 1-M Upper Receiver 11.85 Barrel .223 Wylde was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $964.99 at Brownells for when it comes back.
Prices checked · refreshed daily across 37 retailers
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