Stag Arms Upper Receiver Assembly Kit Left Hand

Name: Stag Arms Upper Receiver Assembly Kit Left Hand
Brand: Stag Arms
Availability: InStock

Stag Arms · Upper Receiver

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Best price

$29.99at OpticsPlanet

In stock Sale checked Nov 13, 2026

Buy at OpticsPlanet

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups

Specifications

Manufacturer: Stag Arms
Color: Black
Platform: AR-15
Caliber: 5.56 mm NATO
Weight: 16 oz

Where to buy

Store	Price	Availability	Buy	Add to build
OpticsPlanet	$29.99Salechecked Nov 13, 2026	In stock	Buy at OpticsPlanet

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Lowest in-stock price in the last 30 days: $26.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 16, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
OpticsPlanet	$29.99	$26.99	$29.99

Since Oct 16, 2026.

About this part

The Stag Arms Upper Receiver Assembly Kit Left Hand is a 5.56 / .223 upper receiver from Stag Arms. One store lists it, OpticsPlanet at $29.99. The lowest in-stock price in the last 30 days was $26.99 at OpticsPlanet.

From the manufacturer

Stag Arms Upper Receiver Assembly Kit Left Hand. Specs Parts: C-clip Ejection port cover Ejection port cover roll pin Ejection port cover spring Forward Assist assembly Forward Assist roll pin Forward Assist spring SKU:STAG300451 FAQ Q: Does Stag Arms have instructions or a video on how to install the kit? A: We strongly recommend having a gunsmith install the upper parts kit to prevent damage during installation. Specifications for Stag Arms Upper Receiver Assembly Kit: Manufacturer: Stag Arms Color: Black Fabric/Material: Aluminum Caliber: 5.56x45mm NATO .223 Remington Gun Make: AR Platform Gun Model: AR-15 Weight: 1 lb Country of Origin: USA Package Contents: Stag Arms Upper Receiver Assembly Kit Ejection Port Cover Ejection Port Cover Roll Pin Ejection Port Cover Spring Forward Assist Assembly Forward Assist Roll Pin Forward Assist Spring What firearm models does the manufacturer say Stag Arms Upper Receiver Assembly Kit is compatible with? The manufacturer says that Stag Arms Upper Receiver Assembly Kit is compatible with AR-15Stag Arms STAG310451: Upper Receiver Assembly Kit Left Hand