Albion 139-3 1/10 Gallon Manual Cartridge Gun w/ Plated Metal Carriage 5/16" thick square rod that you can rotate 4 times for longer life Quality zinc chromate plating to prevent rust Concealed puncture wire Maintainable: replace rod, gripping plates, recoil plate, ejector, pull, springs, etc. as they wear Recoil hook for optional drip-free operation