Sight Block cut to fit any 9mm Glock. Replaces the thread protector on standard-length threaded Glock barrels (Glock 17, 19, 34, 17L). Includes vial of high-temperature thread-locking compound (no set screws are used). Picture at right shows a Glock 43 rigged with a low-profile sight block. The low-profile version matches the Glock 43 slide profile -- and is slightly narrower than a typical 9mm slide.
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This sight block is well made and easy to install. Your front sight picture remains pretty much the same with very little movement when the slide cycles. Even though it is placed on the barrel with locking compound you can easily clean your barrel by simply removing the recoil spring and slide the barrel forward. The front sight was also easy to install. Recommended accessory.