AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/hunt-semi-auto

What works the action of a semi-automatic firearm after each shot?

The recoil and gas from the fired cartridge.

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  1. Recoil and gas from the fired round ✔
  2. The shooter sliding the forend
  3. A lever below the grip

Why: After a shot, the bolt slides back, ejects the empty case and feeds the next round. Each squeeze of the trigger fires one round. When the magazine is empty, the action locks open.

Huh, didn't know that: Because the action absorbs some energy, a semi-automatic shotgun has less felt recoil than a pump.

The dad joke
Why did the semi-automatic get a gold star? It always did its own homework.
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References

Answer: Recoil and gas from the fired round. After a shot, the bolt slides back, ejects the empty case and feeds the next round. Each squeeze of the trigger fires one round. When the magazine is empty, the action locks open.

  1. eCFR, 27 CFR 478.11 www.ecfr.gov/current/title-27/chapter-II/subchapter-B/part-478/subpart-B/section-478.11
    utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round
    Checked 2026-10-09.
  2. NSSF Writer's Guide www.nssf.org/download/?wpdmdl=57396
    The discharge and chambering of a round is either blowback operated, recoil operated or gas operated.
    Checked 2026-10-09.

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