The Align Tactical® THUMB REST LOCKING BLOCK PIN is compatible with Canik® Rival/Mete/TTI® series polymer pistols with [ SQUARE RECESS ] in frame ONLY (NOT TP9 Series, nor TP9 SUB METE, or Mete MC9 Micro-Compacts

The Align Tactical® THUMB REST LOCKING BLOCK PIN integrates an ergonomic ledge for the support hand's thumb to firmly lock down against, serving as a brake against muzzle flip to provide the fastest follow-up sight picture. Increased surface contact with the pistol practically eliminates support hand slippage while providing an index point for an aggressively consistent high thumbs-forward grip. Provides maximum control and speed in Canik® Rival/Mete® pistols for a competitive edge.