Arisaka Defense Indexer M-LOK Hand Stop

The patented Arisaka Defense Indexer represents their philosophy of low-profile, minimal control accessories. Born from user requests for an M-LOK version of their existing Picatinny rail Finger Stop, it combines a slim front-to-back profile with a slight radius across both faces. The Indexer accommodates multiple grip techniques, with its primary use placing it between two fingers—typically the index and middle—further forward on the handguard. This forward positioning keeps it clear of the support hand during transitions to kneeling or prone shooting positions, where shooters naturally move their hand toward the rear. Gripped this way, the Indexer enhances rifle control and makes shouldering the weapon more secure. The wider, flatter profile also performs effectively as a hand stop or barricade stop, and serves as a forward limit to prevent your fingers from slipping off shorter handguards onto a hot barrel or suppressor.