Type 100

The Type 100 was a Japanese submachine gun designed in 1940 by Nambu Arms Manufacturing Company. It was first issued to the Imperial Japanese Army in 1940, usually only to officers, and its production continued to the end of the war. It used the 8x22mm Nambu cartridge in a 30-round magazine. Early models had a rate of fire of 450 rounds per minute, however, the 1944 models had a rate of fire of ~800 rounds per minute. It was heavily based on the Bergmann Mp18, and used a chrome body for resistance against humidity, giving it a sleek, silver-like finish.

Battlefield 1943
The Type 100 is issued to the IJN Infantry kit. It is a fully automatic weapon capable of efficiency in close quarters, but it's performance deteriorates at longer ranges since the player cannot aim down sights. It is capable of killing an enemy within around 7 body shots, though its mediocre accuracy will require a few more shots to finally kill an enemy.

Battlefield: Bad Company 2
The Type 100 makes a brief appearance in the opening mission of Battlefield: Bad Company 2, Operation Aurora. It is the first gun the player uses. It is not included in multiplayer. It is one of the three usable weapons during Operation Aurora.

It has a high rate of fire and effective damage, as well a generally clear iron sights. It has medium recoil and it slightly ineffective at long ranges.

Trivia

 * In Battlefield 1943, it is a direct equivalent in stats to the USMC Thompson.
 * It's inclusion, alongside the Type 5, in the opening mission of Battlefield: Bad Company 2 gives players of Battlefield 1943 a distinct feeling of 'nostalgia'. This was most likely done to also give players a feel of what a campaign mission in Battlefield 1943 would feel like.
 * In Battlefield: Bad Company 2, during the final cutscene of Operation Aurora, the Type 100 in Thomas Wyatt's hands does not have a magazine inserted, but actually has the magazine stuck under the gun itself.
 * Operation Aurora is the only time the Type 100s iron sights can be used