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Precision machined from steel bar stock and heat-treated for exceptional hardness and durability, the heavy-duty slide stop guarantees a secure and consistent lockup, preventing any sloppiness or "play" that may impact accuracy. It is available with a standard .200" diameter pin or an oversized .203" pin for custom fitting, thereby ensuring the tightest possible lockup for utmost accuracy. You can choose from blued 4140 carbon steel or stainless steel, both with a fine bead-blasted matte finish. Furthermore, the fine-line serrations on the pad offer your finger a secure grip, allowing for easy slide release on the first attempt.