The Arisaka Defense Indexer (Arisaka part no. IDX-M-FDE) is a patented, low-profile M-LOK hand stop finished in FDE, built to give your support hand a fixed reference point on the handguard. Its slim front-to-back profile is designed to sit between your index and middle fingers, pulling the rifle firmly into your shoulder without adding bulk to the rail. Beyond indexing your grip, the flatter, wider face doubles as a barricade stop and a forward limit that keeps your fingers from sliding onto a hot barrel or suppressor. Shooters who transition often between standing, kneeling, and prone positions use the Indexer to keep their support hand in the same place every time.

Key Specifications

• Uses a patented low-profile design that adds a fixed reference point without extra bulk.
• Features a slim front-to-back profile sized to sit between the index and middle fingers.
• Mounts directly to M-LOK handguard slots.
• Doubles as a barricade stop for stable support against cover.
• Acts as a forward finger limit, stopping fingers from sliding onto a hot barrel or suppressor.
• Helps maintain a consistent hand position when transitioning between standing, kneeling, and prone.
• Finished in FDE to match flat dark earth builds.

Frequently Asked Questions

What mounting system does the Indexer use? It mounts directly to M-LOK handguard slots.

Does it work as more than a finger stop? Yes, its flatter, wider face also functions as a barricade stop and as a forward limit that keeps fingers off a hot barrel or suppressor.

What color is this version? This version is finished in FDE (flat dark earth).

Buy the Arisaka Defense Indexer

Give your support hand a consistent, repeatable spot on the rail every time you mount the rifle. Order this FDE Indexer from our Lubbock, Texas gun shop and it ships fast, direct to your door with no FFL required for a handguard accessory. Shop more from Arisaka Defense or browse our foregrip and hand stop selection to round out your handguard.