Griffin Armament SR-Rigid M-LOK Rail 13.5in Black Large

Name: Griffin Armament SR-Rigid M-LOK Rail 13.5in Black Large
Brand: Griffin Armament
Availability: InStock

Griffin Armament · Rails & Handguards

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Best price

$175.70at MidwayUSA

In stock checked Nov 10, 2026

Buy at MidwayUSA

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Where to buy

Store	Price	Availability	Buy
MidwayUSA Best price	$175.70checked Nov 10, 2026	In stock	Buy at MidwayUSA
AR15Discounts	$176.00checked Nov 10, 2026	Check store	Buy at AR15Discounts
Dirty Bird	$176.00checked Nov 10, 2026	Check store	Buy at Dirty Bird
OpticsPlanet	$175.70Salechecked Nov 10, 2026	Out of 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: $165.37 at MidwayUSA. Dashed line = out of stock. Tracking since Oct 20, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
AR15Discounts	$176.00	$176.00	$176.00
Dirty Bird	$176.00	$176.00	$176.00
MidwayUSA	$175.70	$165.37	$175.70
OpticsPlanet	$175.70	$175.70	$175.70

Since Oct 20, 2026.

About this part

The Griffin Armament SR-Rigid M-LOK Rail 13.5in Black Large is a 13.5" AR-15 handguard from Griffin Armament. It's sold by 4 stores (1 in stock), from $175.70 to $176.00. The lowest in-stock price in the last 30 days was $165.37 at MidwayUSA.

Fits and works with

Gas system: Carbine · Handguards
Handguard length: 13.5" · Barrels

Specifications

Manufacturer: Griffin Armament
Color: Black
Platform: AR-15
Gas system: Carbine
Length: 13.5"
Attachment: M-LOK

From the manufacturer

Griffin Armament SR-Rigid M-Lok Rail 13.5in Black Large. 5in outside diameter silencers to be mounted inside the octagonal M-Lok rail. This provides suppressor aficionados a sleek and compact overall length to AR15 type firearms. Design objectives of this rail were to provide a suppressor compatible rail with increased rigidity and durability over similar weight and profile current market options. A custom extrusion provides significant internal reinforcements to reduce flex when loading the carbine on the rail. These reinforcements provide rigid mounting for IR laser aimers ensuring minimal POI shift when torque is applied to fore-grip type accessories or when loads are applied to the rail such as practical shooting off barricades or when loading bipods for rapid follow up shots. Internal practical testing showed substantial reductions in POI shift with laser aimers versus competing "slim rails" that lacked this notable product feature. M-Lok flats on each 45 degree surface allow for mounting of your favorite M-Lok accessories. A contiguous picatinny top rail ensures repeatable and accurate mounting for night vision and thermal systems. Specifications for Griffin Armament SR-Rigid M-Lok Rail: Manufacturer: Griffin Armament Color: Black Finish: Anodized Fabric/Material: 7075-T6 Aluminum 6061-T6 Aluminum Gun Model: AR-15 Gun Type: Rifle Gun Rail: Picatinny Weight: 11.9 oz Included Accessories: Standard Inner Diameter: 1.54 in Height: 2 in Mount Type: M-LOK Gas System: Direct Impingement Quantity: 1 Features of Griffin Armament SR-Rigid M-Lok Rail: The new SR-Rigid rails features a close tolerance heavy-duty 7075 aluminum T-6 type 3 hard coat anodized finish. The barrel nut can be easily installed to 35-85 ft/lbs using the included Griffin Armorers Wrench. Flat head T15 torx screws should be tightened to 25/in pounds. 6061-T6 Type 3 hardcoat anodized SR-Rigid Rail Package Contents: Griffin Armament SR-Rigid M-Lok Rail Griffin Armament LPRSR135: SR-Rigid M-Lok Rail 13.5in Black Large