January 8, 2014 The Sight Mark Arrow Bore Sight screws into the end of any arrow, allowing you to bore sight your optics in at 25 or 30 yards. Share this video: Share this on Facebook (opens in new window) Share this on Twitter (opens in new window) Post a Comment Login with FacebookLogin with Google Login To Account Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Δ