The Williams™ FRONT SIGHT RISER BLOCK .340 (M) these risers add to the height of the dovetail. Especially handy on models that require higher than normal front sight. Available in two widths: .250" model is for Williams Streamlined ramps. .340" wide model is for all standard ramps.
Material: Strong, lightweight alloy with a tensile strength of 85,000 pounds
Finish: Rustproof, anodized blue-black finish
Features: Designed to add .25" to the height of a dovetail front sight
Comes with an allen wrench to tighten block into place
Fits: Williams streamlined ramps or ramps with a 1/4" top width