AS-5 (under construction) is an interferometric attosecond beamline for UHV experiments. It is seeded with the PFS front-end delivering waveform-controlled sub-4-fs NIR pulses at a carrier wavelength of ~750nm and a repetition rate of 1 kHz. The beamline will feature a gas harmonic source for the generation of isolated attosecond XUV pulses in one arm of the interferometer whilst the other arm will allow us to modify the shape, frequency and/or polarization of the few-cycle driver laser pulse for attosecond spectroscopy experiments.