If it's a gun, the most common thing is
Pistol (famous models are P08 Luger, M191A1Colt, South 14, Browning M 1935HP).
Rifle (famous models are Mao Se M 1898, Garland M 1, Springfield M 1903, and Companion 38).
Carbine (the famous ones are American M 1 carbine and German Mauser 98K).
Automatic rifles (famous Soviet SVT-40, Kalashnikov AK-47, American bar, M 16 series)
Light machine guns (e.g. British Burun light machine guns, Czech light machine guns)
Heavy machine guns (such as Soviet Browning M 19 17, M2HB, Dshk, Japanese Type 92).
Submachine guns (also known as portable machine guns or submachine guns, such as MP-38/40 from Germany, Thomson M 1928/M 1 from the United States, M3 from the United States and PPsh-4 1 BOOSHA from the Soviet Union).
General machine guns (such as M60 in America and MG34/MG42 in Germany)
Many of them are from World War II or the Cold War era. Enough for 20 people. It seems to be beyond ... anyway, I hope to adopt them.