under barrel grenade launcher (UBGL)

hand-held under-barrel grenade launcher

AP [anti-personnel] grenade pouch / frag [fragmentation] grenade pouch / HE grenade pouch

stun grenade / flash grenade / flashbang / thunderflash / sound bomb

anti-tank grenade launcher

automatic grenade launcher

grenade launcher

grenade-launcher platoon

mounted grenade launcher

single shot grenade launcher

tripod-mounted grenade launcher

UGL pouch (UGL / Underslung Grenade Launcher)

Mk 19 grenade launcher (pronounced Mark 19)

assault rifle grenade launcher system

aerial grenade launcher

buckshot grenade launcher round

203 (M16 rifle with 40-mm grenade-launcher attached)

Mk 19 (grenade-launcher)

barrel assembly (barrel group)

automatic heavy barrel rifle / heavy barrel automatic rifle

launcher barrel

foot march under packs

restricted area (under military jurisdiction)

surveillance, under surveillance

under armor auxiliary power unit (UAAPU)

under arms

under canvas

under command of

under cover of

under fire

under hatches

Under Secretary of Defense (USD)

Under Secretary of Defense for Acquisition, Technology, and Logistics (USD AT&L)