Walker, 27, has been club captain at Aberystwyth for the past two seasons, playing right wing and centre midfield, as well as right back.
He previously played for Bangor City and came through the youth ranks at Wrexham, making 19 appearances in the National League.
McLaughlin is a former Oldham Athletic youth player and has also played for Curzon Ashton.
Keep up-to-date with our exclusive email newsletters.
Subscribe