Weaver one-piece aluminum base is machined to tight tolerances for a custom fit. Base offers maximum strength for rings to hold tight and cross-lock design to fit a variety of rings. Fits- Winchester 03 and 63 rifles.
Specifications:

Type	1-Piece Base
Model	Winchester 1903
Style	Top Mount
Misc
Finish	Black Gloss
Material	Aluminum
Pieces	1
Gun Type	Rifle
Mount Type	Screws
Length
Rings Included	No
Ring Height
Mount Height