If anyone is curious, here's the list of software, equipment, and guns used to make these sounds
Equipment:
- Blue Snowball
- Audacity
- Cakewalk
Guns Sampled:
- DPMS 7.62x39 AK
- Ruger AR-15
- Mossberg 500
- Marlin Model 25N
- Armscor M1600
- Winchester 1894
- Savage Axis .308
- Topper Model 88 20 Gauge
- Mosin Nagant