Good luck there are those grenades that use gas that fires bbs out the bottom but only one direction so you could hold it and just aim to spray a shower of like 25-50 bbs directly one way, but isn't that a little less effective than a 203? I would suggest at this point just getting on of these there are those Llima bean grenades (not sure on correct spelling) but they basically have like a compress gas/water and spray the beans (only have a 60% actual work rate) Not the best as they are very unstable
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