  Dark Matter (DM) may be comprised of axion-like particles (ALPs) with
couplings to photons and the standard model fermions. In this paper we study
photon signals arising from cosmic ray (CR) electron scattering on background
ALPs. For a range of masses we find that these bounds can place competitive new
constraints on the ALP-electron coupling, although in many models lifetime
constraints may supersede these bounds. In addition to current Fermi
constraints, we also consider future e-Astrogram bounds which will have greater
sensitivity to ALP-CR induced gamma-rays.
