Hammer safety block
Hand firearm
Hand gun
Hand-held automatic firearm
Hand-held automatic firearm
Hand-held firearm with recoil attenuation
Handgun
Handgun and method of operating handgun
Handgun apparatus
Handgun with indexing means
Handgun with two-sided breechblock mechanism
Handheld firearm
Handheld firearm
Heavy support weapon
Helical lock for automatic gun
High capacity electrical cartridge interconnect
High velocity anti-surge spring assembly
High volume automatic and semi-automatic firearm
High-rate-of-fire rifle mechanism or dual cyclic rate mechanism
Hind absorber for automatic fire-arms actuated by barrel recoil