Williams Gun Sight Company Target-FP Low Rear Sight (Less Attaching Base) | 1223 This unit is the TARGET–FP (Low) sight line model receiver sight. When Mounted with the proper attaching base it can be adapted to most .22 caliber target rifles as well as many sporter type rifles. In most cases the TARGET–FP (high) receiver sight is recommended on target type rifles with globe front sights. The TARGET–FP (low) is for sporter type rifles and is compatible with standard front sights (some guns may require higher front beads) or the lowest globe type front sights. Because of the versatility of the TARGET–FP receiver sight series, most popular rimfire bolt action rifles can be equipped with target sights. PLEASE NOTE: This is the sight without the attaching base. Base must be purchased separately. Image is a stock photo, which shows the quality of construction and the general appearance of Williams Sights. The actual item for sale may differ in appearance to provide the proper fit and function.