DIY compressed air BB machine gun

DIY compressed air BB machine gun.
This step-by-step building instruction shows you how to build a simple compressed air BB
machine gun with common available parts.
The BB machine gun pictured in this build has a 6 litre air supply and a magazine holding
1000+ BB:s. The rate of fire is around 150+ BB/sec The 6 litre air canister holds enough
compressed air to empty the magazine when filled. This machine gun is specifically designed
to handle steel BB:s.
The air canister can be filled with an ordinary bicycle pump, but will not perform as good as if
it were filled with a refrigerator compressor or equivalent.
No exotic tools are needed to complete this project.
4119
4124
4129
4132
4133
4135
4138
4140
4145
4147
4148
4149
4150
4152
4154
4155
4157
4158
4159
4161
4163
4
4165
4167
4168
4169
4170
4171
4173
4174
4175
Before you solder all parts together you need to add a small airflow restricting plug
(approximately 1.5mm hole) inside the barrel pipe in order to get a reliable BB feeding. This
is particularly important if you intend to use a long magazine hose like the one in this build.
The main airflow should run through the magazine hose.
4222
4176
4177
4178
4184
4186
4188
4189
4190
4193
4191
4195
4196
4197
4198
4201
4204
4205
4207
4206
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4221