Bibliography

• Bullet Picture: https://pngtree.com/freebackground/bullet-background_260643.html
  
• WW2 Wallpaper: http://yesofcorsa.com/call-of-duty-ww2/
• Bullet Definition:  https://en.wikipedia.org/wiki/Bullet
• Bullet Info: https://www.explainthatstuff.com/bullets.html
• Rifling Picture: https://www.renderosity.com/mod/gallery/blender-rifling/2465905/?p
• Rifling Info: https://www.nrafamily.org/articles/2017/10/31/gun-barrels-how-does-rifling-work/
• Rifling Physics Picture: https://qph.fs.quoracdn.net/main-qimg-1c4a99f3978dde0525e50b702dd1974e-c
• Angular Momentum/Rifling Info:https://physics.stackexchange.com/questions/390974/physics-of-barrel-rifling
• Internals of a Pistol Picture: https://engineeringinsider.org/hand-gun-work/
• Internals of a Ak47 Picture: https://www.google.com/search?biw=1152&bih=562&tbm=isch&sa=1&ei=gj7yW8W6C5Ss0PEP_c626A0&q=how+does+a+ak47+gun+work&oq=how+does+a+ak47+gun+work&gs_l=img.3...266881.267752..267906...0.0..0.182.628.0j5......0....1..gws-wiz-img.zKPG_772KIQ#imgrc=VJ8iO0C-LPEb6M:
• Info on recoil springs: https://www.acxesspring.com/recoil-springs.html
• Equations: Knight, Randall Dewey, and Randall Dewey. Knight. Student Workbook: Physics for Scientists and Engineers, a Strategic Approach with Modern Physics, 4/E. Pearson, 2017.
• Black & White Bullet Picture: http://mcadams.posc.mu.edu/medical.htm
• Hollow Point Picture: https://www.thetruthaboutguns.com/2014/02/daniel-zimmerman/g2-researchs-rip-ammo-ballistic-testing-phase-two/