MK16 Super Duty Complete Upper Receivers 5.56mm - MK16 11.5" Super Duty Upper CHF Bbl, Ach, Nano Fh/BCG ODG

2 options

Blackout of stock
OD Green, this page

Geissele Automatics Mk16 Super Duty Complete Upper Receivers 5.56mm - Mk16 11.5'''' Super Duty Upper Chf Bbl, Ach, Nano Fh/Bcg Odg - Upper Receiver for AR-15 - view 1

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Geissele

Overview

The Mk16 Super Duty Complete Upper Receiver from Geissele Automatics features an 11.5-inch barrel chambered in 5.56 NATO, designed for optimal performance in AR-15 builds. This complete assembly includes a thread pitch of 1/2x28, making it compatible with a variety of muzzle devices, while the OD Green finish adds a distinct look to your rifle. This upper receiver is commonly found in compact builds aimed at versatility and maneuverability.

Specifications

MPN08-218ODG

Barrel Length11.5

PlatformAR-15

AssemblyComplete

Caliber5.56 NATO

ColorOD Green

Thread Pitch1/2x28

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MK16 Super Duty Complete Upper Receivers 5.56mm - MK16 11.5" Super Duty Upper CHF Bbl, Ach, Nano Fh/BCG ODG

2 options

Blackout of stock
OD Green, this page

Available Merchants(1)

Prices checked Oct 11, 2026

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Brownells

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Shipping Speed

Out of Stock

$1,350

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Build history on GunPartPicker

Builders on GunPartPicker first added the Geissele MK16 Super Duty Complete Upper Receivers 5.56mm - MK16 11.5" Super Duty Upper CHF Bbl, Ach, Nano Fh/BCG ODG to a build in March 2026.

It was out of stock everywhere we track for all of September 2026, and today the one retailer we track is out of stock. Listed prices start at $1,350 at Brownells for when it comes back.

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Updated Oct 12, 2026 · from real builds on GunPartPicker · Prices checked Oct 11, 2026 · refreshed daily across 37 retailers