Field recordings: The Free Firearm Sound Library by Ben Jaszczak, Brian Nelson, Kevin Heras and Matthew Nanney. CC0-1.0.
https://opengameart.org/content/the-free-firearm-sound-library
AK-R uses actual AK-47 C_28P recording. Fictional SMG/DMR use separately designed 9mm/marksman rifle banks.
Variants are pitch variants of a single recording. Cropped initial silence; converted to mono 48kHz 16-bit PCM; peak headroom and tail fade applied.
