Used M203 shower shell of unknown make that I used lightly before switching to rubber projectile shells. Holds 120 rounds of 6mm bb's and could probably use some grease. Takes green gas/propane. Asking $15 + shipping OBO. Able to provide more information upon request. Shipping available to anywhere in the U.S. via USPS flat rate shipping. Please be PayPal ready, I'll cover PayPal fees if you cover shipping.