Recordings of 2 nerf guns, the strongarm and modulus recon mkii. Both well put together nerf guns, would be a good basis when creating your own weapon sounds when coupled with other layers.
I combined 2 sounds. One sound is always the same till the end and the other sound is separated in three times: one is lower, the other one louder and again lower, but still the same sound. To finish the sound i put a gong sound to show that is finish.
I've been looking for a similar effect for quite a few years and no one has built one. So, using a simple synth and bass drop worked wonders for what i needed. The sound effect is from the matrix and is the sound heard near the beginning when the police are attempting to arrest trinity, just before the agents get upstairs. When trinity jumps, this is that effect.