Arisaka Defense Indexer for Geissele SMR 416



Product Description

The Arisaka Defense Indexer is a continuation of our low profile, minimal control accessories. It was developed due to end-user demand for a Geissele SMR 416 version of our Finger Stop for Picatinny rails, and features a slim front-to-back profile and slight radius across both faces.

The Indexer can be used in a variety of ways, but the main intent is to place it between two fingers (usually index and middle). This typically places it further forward on the handguard, which also means it doesn’t get in the way when transitioning to kneeling or prone shooting positions, where most people move their support hand towards the rear. Used in this manner, the Indexer makes it much easier to pull the rifle into your shoulder and maintain control while shooting.

Additionally, the wider, flatter profile of the Indexer functions very well as a hand stop or barricade stop, and also works as a forward limit to prevent your fingers from slipping off shorter handguards onto a hot barrel or suppressor.

  • Height: 1.0″
  • Width: 0.58″
  • Length: 2.2″
  • Weight: 0.9 oz

The Indexer is CNC machined from 6061-T6 aluminum and MIL-A-8625 Type III hard coat anodized. Requires an IP25/T25 Torx wrench for installation (not included). Made in the USA.




Arisaka Defense

Technical Information

Color / Pattern


Mounting Platform

Geissele SMR 416

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit

Customer Reviews

Based on 1 review
Alex H.
Finally found one!

Yall were the only company that had one in stock. In fact y'all are one of the only company that has other things that I was looking for in stock as well. Just purchased some other things from you guys again. Keep up and I will be greatful to keep giving you my money. A+