_:n69e257319adc49cdae25e38e97787ba3xb0
<http://schema.org/description>
"Williams apertures are standard thread size and will accommodate Williams, Redfield and Lyman receiver sights. The Twilight series are designed for shooting under poor light conditions. They create a sharp contrast that gives quick definition to the aperture hole. Big Game aperture is designed..."
<https://www.midwayusa.com/product/100598331>