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Arisaka Defense

Low Profile Picatinny Rail - M-Lok Low Profile 5 Slot 2.15 Black

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Low-profile Picatinny

Rail designed to reduce bulk

5 Picatinny

Attachment slots in a 2.15-inch

Stands 0.277

Inches above the mounting surface

Uses Bcm

Reverse-threaded KeyMod screws to help

Constructed From

6061-T6 aluminum

$30.00
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SKU: 100028938

Overview

This low-profile rail is designed to add Picatinny attachment points without adding unnecessary bulk to a KeyMod handguard setup. Its compact 5-slot layout and minimal height help keep mounted accessories close to the handguard, which is useful when building a streamlined rifle for hunting or other field use. Arisaka’s design also uses BCM reverse-threaded KeyMod screws to distribute the load of larger Picatinny accessories across more KeyMod slots. Finished in black and built from 6061 T-6 aluminum, it offers a restrained mounting option for shooters who want a cleaner, lower-profile setup.

Why Hunters Choose the Arisaka Defense

Low-profile Design

Keeps accessories close to the

Five Picatinny

Attachment slots in a compact

Uses Bcm

Reverse-threaded KeyMod screws to spread

6061-t6 Aluminum

Construction for a lightweight 0.6-ounce

Black Finish

Matches a subdued, low-visibility setup

Key Features

  • Low-profile Picatinny rail designed to reduce bulk on KeyMod setups.
  • Provides 5 Picatinny attachment slots in a 2.15-inch length.
  • Stands 0.277 inches above the mounting surface to keep accessories close to the handguard.
  • Uses BCM reverse-threaded KeyMod screws to help spread load across more KeyMod slots.
  • Constructed from 6061-T6 aluminum.
  • Black finish; weight listed at 0.6 oz.

Best Used For

  • KeyMod users wanting a low-profile Picatinny section for compact accessory mounting
  • Hunters building a streamlined handguard setup with minimal added bulk
  • Shooters needing five Picatinny slots for lights, grips, or other accessories
  • Users prioritizing close-to-handguard accessory placement on a KeyMod platform
  • Anyone replacing taller rail adapters with a shorter, lower-profile option

Specifications

Attachment Slots5
ColorBlack
FitsKeyMod
Height Above Mounting Surface0.277 in
Length2.15 in
Material6061 T-6 Aluminum
Weight0.6 oz

Pros

  • Low-profile design keeps accessories close to the handguard
  • Provides five Picatinny attachment slots in a compact 2.15-inch rail
  • Uses BCM reverse-threaded KeyMod screws to spread load across more slots
  • 6061-T6 aluminum construction for a lightweight 0.6-ounce accessory
  • Black finish matches a subdued, low-visibility setup

Considerations & Trade-offs

  • This rail is designed for KeyMod, so it is not a universal fit for M-Lok or other mounting systems despite the title wording.
  • The 5-slot, 2.15" format offers a compact mounting area, which may be limiting if you need more Picatinny space for larger accessories.
  • Its low-profile design keeps accessories close to the handguard, but that also means less stand-off height than taller rail sections.
  • Uses BCM reverse-threaded KeyMod screws, so installation depends on compatibility with that specific hardware style.

Suggested Comparisons

  • KeyMod to Picatinny rail adapter
  • Low-profile accessory rail
  • Handguard-mounted rail section
  • Picatinny accessory mounting platform

Suggested Accessories

  • Picatinny rail covers
  • KeyMod accessories
  • Weapon light mounts
  • Optic mounting accessories

Frequently Asked Questions

What mounting system does this rail fit?

This rail fits KeyMod. The source data does not list M-Lok compatibility, despite the product title including M-Lok.

How many Picatinny slots does it provide?

It provides 5 Picatinny attachment slots.

How much space does it add above the mounting surface?

The 5-slot model sits 0.277" above the mounting surface.

What is the rail made from?

The source data lists 6061 T-6 aluminum construction.

What color is it?

Black.