Rings, Mounts & BasesArisaka DefenseSold by Brownells

Arisaka Defense

Zero Retention Clamp For Handguard - Offset Picatinny Adapter Ocm-C, Osm-K, Osm-M, Ssm-K, Ssm-M

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

Designed Mount

On Arisaka Offset Scout Mount

Supports Picatinny-based

Lights and other rail-mounted accessories

Compatible M-lok,

M-Lok, KeyMod, and CMR handguards

Requires Compatible

Scout Mount to form a

Compact Adapter

Measures 1.76 inches in length

$15.00
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SKU: 430104539

Overview

This adapter is intended for shooters who want to add Picatinny-based lights or other rail-mounted accessories to M-Lok, KeyMod, or CMR handguards through a compatible Arisaka Scout mount. It serves as a compact interface piece rather than a standalone mount, so it must be paired with one of the listed Offset Scout Mount or Side Scout Mount options to complete the setup. That makes it a practical choice for building a clean, offset accessory arrangement without changing the handguard’s core mounting system. At 1.76 inches long and 0.5 ounces, it adds only a small amount of bulk to the overall configuration.

Why Hunters Choose the Arisaka Defense

Designed Mount

On Arisaka Offset Scout Mount

Supports Picatinny-based

Lights and other rail-mounted accessories

Compatible M-lok,

M-Lok, KeyMod, and CMR handguards

Compact 1.76-inch

Length keeps the adapter low-profile

Lightweight 0.5-ounce

Design adds minimal weight to

Key Features

  • Designed to mount on Arisaka Offset Scout Mount and Side Scout Mount systems
  • Supports Picatinny-based lights and other rail-mounted accessories
  • Compatible with M-Lok, KeyMod, and CMR handguards
  • Requires a compatible Scout Mount to form a complete mounting solution
  • Compact adapter measures 1.76 inches in length
  • Lightweight design weighs 0.5 oz

Best Used For

  • Users needing to mount Picatinny lights on M-Lok, KeyMod, or CMR handguards with a compatible Scout Mount.
  • Shooters building a compact offset setup for rail-mounted accessories on a handguard.
  • Owners of Arisaka Offset Scout Mount or Side Scout Mount systems seeking a Picatinny adapter.
  • Hunters and field users who want a lightweight adapter for accessory mounting without extra bulk.

Pros

  • Designed to mount on Arisaka Offset Scout Mount and Side Scout Mount platforms
  • Supports Picatinny-based lights and other rail-mounted accessories
  • Compatible with M-Lok, KeyMod, and CMR handguards when paired correctly
  • Compact 1.76-inch length keeps the adapter low-profile
  • Lightweight 0.5-ounce design adds minimal weight to the setup
  • Requires a matching Scout Mount component for a complete mounting solution

Considerations & Trade-offs

  • Requires a compatible Arisaka Offset Scout Mount or Side Scout Mount to form a complete mounting solution; it is not a standalone mount.
  • Designed for Picatinny-based lights and accessories, so it is only useful if your setup needs that rail interface.
  • Intended for M-Lok, KeyMod, and CMR handguards through the specified Arisaka mounting systems, which limits compatibility outside those platforms.
  • At 1.76" long and 0.5 oz, it is compact and light, but it adds an additional component to the overall mounting setup.

Suggested Comparisons

  • Handguard light mounts
  • Picatinny rail adapters
  • M-LOK accessory mounts
  • KeyMod accessory mounts

Suggested Accessories

  • Handguard light mount
  • Picatinny accessory mount
  • M-LOK mounting base
  • KeyMod mounting base

Frequently Asked Questions

What is this adapter used for on a hunting rifle or carbine handguard?

It is designed to mount on Arisaka Offset Scout Mount or Side Scout Mount setups for M-Lok, KeyMod, and CMR handguards, allowing Picatinny-based lights or other Picatinny rail-mounted accessories to be attached.

Does this product work by itself, or does it need other parts?

It requires one of the listed Arisaka mounts to form a complete mounting solution: Offset Scout Mount M-Lok, Offset Scout Mount MCX (M-Lok), Offset Scout Mount KeyMod, Offset Scout Mount CMR, Side Scout Mount M-Lok, Side Scout Mount KeyMod, or Side Scout Mount CMR.

What accessories can be mounted with this adapter?

The source specifically mentions Picatinny-based lights such as the Surefire X300 or Inforce WML, as well as other Picatinny rail-mounted accessories.

What handguard systems is it intended for?

The description says it is for M-Lok, KeyMod, and CMR handguards when used with the compatible Arisaka mount.

What are the listed size and weight?

The provided specs list the length as 1.76 inches and the weight as 0.5 oz.