You haven't given us much for specifics.
Factory gun? What model?
And how much does it weigh?
And..... it would appear the front mount screw of the rail has been screwed into the recoil lug. Or is that an optical illusion?
Its a Remington 700 LR in 7mm Mag, many people just refer to them as just Remington LR and with the pic you should know it is a factory 700. Also if you look at the last pic you can clearly see that there's nothing screwed into the recoil lug. You new guys crack me up...lol. Welcome to the fire.