Odin Works

ODIN Works 6mm ARC Complete Upper Receiver 18" DMR XL Rifle Barrel - 17.5" O2 Lite M-LOK Rail

Odin Works 6mm ARC Complete Upper Receiver 18" DMR XL Rifle Barrel - 17.5" O2 Lite M-LOK Rail - Upper Receiver for AR-15 - view 1
Odin Works 6mm ARC Complete Upper Receiver 18" DMR XL Rifle Barrel - 17.5" O2 Lite M-LOK Rail - Upper Receiver for AR-15 - view 2
Odin Works 6mm ARC Complete Upper Receiver 18" DMR XL Rifle Barrel - 17.5" O2 Lite M-LOK Rail - Upper Receiver for AR-15 - view 3
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Odin Works

Overview

The Odin Works 6mm ARC Complete Upper Receiver features an 18-inch DMR XL rifle barrel designed to maximize the performance of the 6mm ARC caliber. This complete assembly allows builders to easily enhance accuracy and terminal performance, making it a solid choice for precision shooting applications. You'll typically find this upper in builds focused on the 6mm ARC caliber, which is favored for its versatility in both target and hunting scenarios.

Specifications

MPNCU-17-ML-O2-6MM-18-ARC-GBADJ
Caliber6mm ARC
PlatformAR-15
AssemblyComplete
Barrel Length18

Available Merchants(1)

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$902
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Build history on GunPartPicker

Builders have been adding the ODIN Works 6mm ARC Complete Upper Receiver 18" DMR XL Rifle Barrel - 17.5" O2 Lite M-LOK Rail to their builds on GunPartPicker since February 2026. All time, it ranks #620 of the 1,654 upper receivers builders have added.

Availability is good: it was in stock at one retailer or another nearly every day in September 2026, but today the one retailer we track is out of stock. Prices barely moved in September 2026, holding around $901.55, so there haven't been real sales lately. Listed prices start at $901.55 at Primary Arms for when it comes back.

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Frequently Built With

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Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

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CMMG AR-15 Lower Springs and Pins KIT - 55AFF75

Buffer Spring$10in 25% of them
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CMMG Zeroed AR-15 Bolt Catch KIT

Bolt Catch$16in 25% of them

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