Loudest paper gun

According to Official Guinness Records,

The loudest paper gun measured 103.8 db and was produced by Takuya Tojo (Japan) at Park Challenge / GWR Live! in Tokyo Midtown, Tokyo, Japan, on 5 May 2010. The attempt was part of a Guinness World Records live event at Tokyo Midtown.

For a complete list of 2010 records, please visit 2010 Guinness Records in Japan.

Other Japan records that might interest you:

• Fastest time to remove labels and caps from five plastic bottles
• Most chair rotations in one minute by a team of two relay
• Lowest single-round score in a professional golf tour tournament
• Fastest horizontal 10 m body roll
• Most consecutive matches played without missing an inning, professional baseball