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Primary Weapons MK116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde

Name: Primary Weapons MK116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde
Brand: Primary Weapon Systems
SKU: 18-M116UA0B
Price: 1029.49 USD
Availability: OutOfStock

Primary Weapon Systems Primary Weapons Mk116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde - Upper Receiver for AR-15 - view 1

Primary Weapon Systems Primary Weapons Mk116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde - Upper Receiver for AR-15 - view 2

Primary Weapon Systems Primary Weapons Mk116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde - Upper Receiver for AR-15 - view 3

Primary Weapon Systems Primary Weapons Mk116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde - Upper Receiver for AR-15

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Primary Weapon Systems

Overview

The Primary Weapons Mk116 Mod 1-M Upper Receiver features a complete assembly with a 16-inch barrel chambered in .223 Wylde, allowing you to safely shoot both .223 Remington and 5.56 NATO ammunition. Its mid-length gas system enhances reliability and reduces felt recoil, while the 1:8 twist rate provides versatility for stabilizing a wide range of bullet weights. This upper receiver is commonly found in builds focused on a balance of accuracy and versatility, making it suitable for both competitive shooting and tactical applications.

Specifications

MPN18-M116UA0B

Gas System LengthMid-Length

Twist Rate1:8

Barrel Length16

ColorBlack

PlatformAR-15

AssemblyComplete

Caliber.223 Wylde

FinishHardcoat Anodized

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Primary Weapons MK116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde

Available Merchants(1)

Prices checked Sep 28, 2026

Stock Alert

AT3 Tactical

Shipping TBD

Shipping Speed

Out of Stock

$1,029

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Price and stock

The Primary Weapons MK116 Mod 1-M Upper Receiver 16.1 Barrel .223 Wylde was out of stock everywhere we track for all of August 2026, and today the one retailer we track is out of stock. Listed prices start at $1,029.49 at AT3 Tactical for when it comes back.

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Prices checked Sep 28, 2026 · refreshed daily across 35 retailers