NOTE:The video above is not mine.
I am inclined to disagree with a good chunk of the content since it is somewhat of an apples to oranges comparison the video narrator is making.
For the uninitiated, a submachine gun (“subgun” for short) can be defined as a fully automatic carbine designed to fire pistol cartridges. Semi-automatic only variants are readily available on the US market as pistol caliber carbines.
I would say that a high quality semiautomatic shotgun (like a Benelli M2 Tactical) can, depending on the circumstances, fill the CQB niche of the submachine gun (such as the MP5) simply by virtue of being able to put out a large volume of pistol caliber bullets in a very short amount of time.
- Reloads are much slower.
- Magazine changes on a carbine are much faster than tube feeding a shotgun.
- The overall shot capacity (number of times you can pull the trigger) is going to be lower than a submachine gun or pistol caliber carbine.
- A shotgun is less precise than a submachine gun or pistol caliber carbine.
- A shotgun is generally heavier than than a submachine gun or pistol caliber carbine.
- A shotgun is generally longer than a submachine gun or pistol caliber carbine.
- A shotgun is more difficult for smaller statured persons to use and practice with than a submachine gun or pistol caliber carbine.
- The Most Effective Portable Fire Arm In Existence (1925) (deserteagletech.wordpress.com)
- Gun-Shy-No-More in Vegas (ajtravelconfessions.com)
- The Venerable Sten – The Allies’ $10 Dollar Submachine Gun (dailypaul.com)