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2. Semi-automatic pistol - Wikipedia

   en.wikipedia.org/wiki/Semi-automatic_pistol

   After a round of ammunition is fired, the spent cartridge casing is extracted and ejected as the slide/bolt moves rearwards under recoil, the hammer/striker is cocked by the slide/bolt movement, and a new round from the magazine is pushed into the chamber when the slide/bolt returns forward under spring tension.

3. Recoil operation - Wikipedia

   en.wikipedia.org/wiki/Recoil_operation

   Recoil of firing forces bolt and barrel fully to the rear, compressing the return springs for both. Bolt is held to rear, while barrel unlocks and returns to battery under spring force. Fired round is ejected. Bolt returns under spring force, loads new round. Barrel locks in place as it returns to battery.

4. Blowback (firearms) - Wikipedia

   en.wikipedia.org/wiki/Blowback_(firearms)

   The G3 bolt features an anti-bounce mechanism that prevents the bolt from bouncing off the barrel's breech surface. [28] The G3's "bolt head locking lever" is a spring-loaded claw mounted on the bolt carrier that grabs the bolt head as the bolt carrier group goes into battery.

5. Latch - Wikipedia

   en.wikipedia.org/wiki/Latch

   A latch bolt is an extremely common latch type, typically part of a lockset. It is a spring-loaded bolt with an angled edge. [1] [2] When the door is pushed closed, the angled edge of the latch bolt engages with the lip of the strike plate; a spring allows the bolt to retract. Once the door is fully closed, the bolt automatically extends into ...

6. Breechblock - Wikipedia

   en.wikipedia.org/wiki/Breechblock

   The breechblock fits inside the slide. There is a chamfer (A) on the top rear of the breechblock and a corresponding internal chamfer in the slide. For the chamfer (B), there are corresponding inclines machined inside the slide. A return spring acts on the rod at the rear of the slide, pushing the slide forward.

7. Pistol slide - Wikipedia

   en.wikipedia.org/wiki/Pistol_Slide

   Pistol slide. A SIG Sauer P226 with slide closed (top) and opened (bottom). On the bottom view, slide is locked to the rear by the slide stop. The slide on the majority of fully / semi-automatic pistols is the upper part that reciprocates ("slides") with recoil during the gun's operating cycle. It serves as the bolt carrier group (BCG) and ...