Guntec USA AR-15 Castle Nut For Car/M4 Buffer Tube

Name: Guntec USA AR-15 Castle Nut For Car/M4 Buffer Tube
Brand: Guntec Usa
Availability: InStock

Guntec Usa · Buffer Tubes & Springs

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Best price

$7.95at OpticsPlanet

In stock Sale checked Oct 31, 2026

Buy at OpticsPlanet

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Where to buy

Store	Price	Availability	Buy	Add to build
OpticsPlanet Best price	$7.95Salechecked Oct 31, 2026	In stock	Buy at OpticsPlanet
Battlehawk Armory	$4.91Salechecked Oct 31, 2026	Check store	Buy at Battlehawk Armory

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: $7.95 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Battlehawk Armory	$4.91	$4.91	$5.03
OpticsPlanet	$7.95	$7.95	$7.95

Since Oct 27, 2026.

About this part

The Guntec USA AR-15 Castle Nut For Car/M4 Buffer Tube is an AR-15 buffer part from Guntec Usa. It's sold by 2 stores (1 in stock), from $4.91 to $7.95. The lowest in-stock price in the last 30 days was $7.95 at OpticsPlanet.

Specifications

Manufacturer: Guntec Usa
Type: Buffer Tube
Platform: AR-15

From the manufacturer

Guntec USA AR-15 Castle Nut For Car/M4 Buffer Tube. The manufacturer suggests that Guntec USA AR-15 Castle Nut For Car/M4 Buffer Tube is compatible with AR-15GUNTEC USA CASTLE: AR15 Castle Nut For Car/M4 Buffer Tube