Recently purchased an airsoft 40mm grenade for an under barrel launcher and the caps or plugs it came with were made of a black rubber which would be very hard to find once fired. So I figured that one printed out of some orange PLA I had sitting around would be easier to find and if lost it would be no worse than the bio BBs that are fired during the game. Highly recommend printing in a bright colour so that you can reuse them. Have fun!

Also flip the model so it prints flat side down!

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