Barely used S.T.A.R. XR5 at the NAE , was selling a load of kit , guy next to me had it , ended up swapping a dog ruff AK (and some beer tokens hence it’s in ‘what have you just bought’) said it was faulty not feeding properly and poor range . Had a quick look , no nub and the gearbox was dry as a cream cracker! New nub and a liberal application of silicon and now great range and running very smoothly but best of all ITS THE SILLY WHITE ONE ! 😂😂😂