Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Black 12.55 in

Name: Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Black 12.55 in
Brand: Rainier Arms
Availability: InStock

Rainier Arms · Rails & Handguards

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Best price

$240.00at OpticsPlanet

In stock Sale checked Oct 21, 2026

Buy at OpticsPlanet

Where to buy

Store	Price	Availability	Buy	Add to build
OpticsPlanet	$240.00Salechecked Oct 21, 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: $240.00 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 12, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
OpticsPlanet	$240.00	$240.00	$240.00

Since Oct 12, 2026.

About this part

The Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Black 12.55 in is a 12.55" AR-15 handguard from Rainier Arms. One store lists it, OpticsPlanet at $240.00. The lowest in-stock price in the last 30 days was $240.00 at OpticsPlanet.

Fits and works with

Handguard length: 12.55" · Barrels

Specifications

Manufacturer: Rainier Arms
Color: Black
Platform: AR-15
Length: 12.55"
Attachment: M1913 Picatinny

From the manufacturer

Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Black 12.55 in. To achieve this we designed it an extended aluminum barrel nut and larger stainless steel mounting lugs for better rigidity to maintain a mechanical zero. The Pro Series Quad rail built to stand up to the rigors and demands of what your duty weapon requires. Specifications for Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard: Manufacturer: Rainier Arms Color: Black Finish: Mil Spec Type III Hard Coat Anodized Fabric/Material: 6000 Series Aluminium Gun Make: AR Platform Gun Model: AR-15 Attachment Type: Picatinny Features of Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard CNC machined 6000 series extruded Aluminum Hard Coat Anodized Milspec Type III Class 2 Black Barrel Nut is 7075 Aluminum steel wrench and mounting hardware included No Barrel nut shims required for installation Weight: 19.2 oz 1.31 in interior diameter 2.2 x 1.97 outer dimensions Full length picatinny rails with laser engraved position marks at the 3 6 9 and 12 oclock positions Compatible with most known low profile non-adjustable and adjustable gas blocks Package Contents: Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Barrel nut and hardware Rainier Arms RA017: Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Black 12.55 in