Darton 4X32 Challenger Compact Scope for Crossbow Bowhunting, HAMMERS 4X32 ILLUMINATED MULTI-LINE RETICLE COMPACT CROSSBOW SCOPE, Barska 4x32 Compact Contour Crossbow Scope, AC10886, Barska 3x32 IR Compact Contour,Crossbow Scope, AC11332,