Which Spare Glock Parts To Keep On Hand? Which Glock parts are subject to needing replacement the soonest. If one were to keep a few essential 'spare parts' around... what would they be? I've started with the recoil assembly/spring. Thank you in advance for sharing your knowledge. This forum has been a great education and asset to my new-found interest in handguns & will likely lure me back to rifles in the near future!