The 28-year-old has arrived from Vanarama National League North rivals Bradford Park Avenue.

Killock has been granted permission to play for the Pilgrims in the Emirates FA Cup and could make his debut against AFC Mansfield on Saturday.

The Huddersfield-born defender has spent the bulk of his career with AFC Telford United and Harrogate Town — and captained the Bucks to promotion to the National League in 2010-2011.