Kimber 8-40 Scope Base Set, 2 Piece, Matte Blue - 1000520 These bases are elegantly contoured to match your Kimber rifle. Windage adjustable screws enable perfect centering of the scope which aids in reliability and accuracy. Will fit Kimber 84M, 84L, Kimber 17 and Kimber 22 actions. 8x40 screws.