Make my own out of soda straws. If they get lost or damaged....oh..well. When it comes down to it, the tubes are so easily reloaded by hand that it gives you a break from laying for the last 17 shots ( that is what my Marlin holds). This coming critter season May to sept. i have extra mags for the 144 lsb I recently got. Ordered 4 more 10 shot mags so after what I have already, the rest to reload the mags will be after 75 shots.