The FP series model GR Williams Peep Sight is for grooved recievers on airguns, and 22 rifles (low line of sight).
- Easy installation
- No drilling or tapping required*
Internal micrometer adjustments have positive internal locks. The FP is strong, rugged, and dependable. The alloy used to manufacture this sight has a tensile strength of 85,000 pounds. Yet, the FP is light, and compact.
The model FP-GR is designed to fit factory drilled and tapped holes, and usually do not require any special gunsmithing to install. *(some early models may require drilling and tapping)
The FP-GR receiver sight is furnished with the R-3/8-093 aperture.
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