Some sort of large brass catcher that fits launchers.
Please?
Or make 40mm canisters craftable perhaps?
Even though I can’t actually make 40mm grenades, I’m still a fan of 40mm buckshot/flechette/acid bomb.
EDIT: Actually, I just looked at json and:
"type" : "GUNMOD",
"id" : "brass_catcher",
"name" : "brass catcher",
"description" : "A bag that hangs off the side of your gun and catches ejected casings so you don't have to pick them up.",
"location": "accessories",
"weight" : 114,
"to_hit" : 0,
"color" : "light_gray",
"symbol" : ":",
"material" : ["cotton", "null"],
"mod_targets" : ["shotgun", "smg", "rifle", "pistol", "launcher"],
...
…yet it doesn’t show up ingame, and I get a “You cannot attach a brass catcher to your Milkor MGL”.
Taking it to bug board I guess.