The Mid Range Mega Soule type sight made for silhouette and mid range, having 2.5 inches of vernier scale. This model features the following: 1. An adjustable spring detent mechanism; 2. 41 minutes of windage to left and to the right for a total of 82 minutes windage; 3. Windage and elevation adjustable to 1/1000 of an inch or 1/10th of a minute; 4. Hadley eyecup with 12 apertures from .015"-.095" and a rubber O ring to protect the stock; 5. Vernier scale on right and left sides of the stem. 6. Adjustable wear plate to take up any wobble that may develop in the staff. The staff is thicker and the larger markings are extremely easy to read. This short base model is for hole spacings from 1.100"-1.500" and comes with two 10-28 screws. You can bet you won't be running out of windage with this sight on your rifle.