Thanks! I am glad you are enjoying as much as I am enjoying putting it together... slowly...
Anna, I use Matt spray varnish from Windsor and Newton, it's art spray but the best I have ever come across. However, in this case, I sprayed the guns, they remained slightly glossy, so I resprayed them and they stayed slightly glossy still. I then gave them a coat of Humbrol matt spray, but it went and frosted on me and nothing I could would fix it! So into the Dettol they went...