The Gloucestershire County League side, currently top of their table, upset their Toolstation hosts with top scorer Martin taking his tally to sixteen for the season already.
It was the third cup competition this season that the O's have departed at the first hurdle.
Team: Perry, Planter, Coles, Day, Davies, Leigh, Carter, Dias, Harris, Hutton, Pearce.
Subs: Hardiman and Douglas for Leigh and Hutton.