Searching the Brownell's site for a scope mount for Enfield brings up conflicting information. They list a no-drill, no-tap mount by S&K that comes up for Enfield, 1917, which sounds like they mean the U.S. M1917 derived from the P-14. The changes to the p-14 design in .303British to make it the U.S. M1917 in .30-06 shouldn't affect how this scope mount fits if it really is for the M1917, but in the detail of the listing it says it fits the SMLE No1.MkIII (and Ishapore variant in .308) and that is an entirely different rifle from the Enfield P-14/ U.S. M1917. You should research with S&K about this before ordering one.