This grenade shell is inspired by the Aliens movie franchise. In the Aliens franchise, Armat Battlefield Systems manufactures the M40 High Explosive Dual Purpose (HEDP) grenade. The M40 grenade is to be fired from the U1 Grenade Launcher.
Airsoft Grenade Shells
Aliens M40 HEDP Grenade Shell (130mm Long) for APS 870 Airsoft Shotshell
M40 HEDP Grenade, Xenopedia
Cartridge Ejected Guns
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Aliens M40 (HEDP) Grenade Movie Prop by MadMansGun - Thingiverse
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M40 HEDP Grenade, Xenopedia
Cartridge Ejected Guns
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Aliens M40 HEDP Grenade Shell (130mm Long) for APS 870 Airsoft Shotshell
40mm Grenade Shell (Basic) for APS 870 Airsoft Shotshell - Use 870 Sho – BlastersBB