In IPSC (International Practical Shooting Confederation), speed and reliability are everything. While a slide locking back on an empty magazine is a standard safety and functional feature for self-defense or duty handguns, it is often viewed as a disadvantage in a high-speed competitive environment.
Here is why most IPSC competitors prefer their slides to stay forward:
In IPSC, competitors aim to perform a proactive reload (reloading before the gun is completely empty) while moving between shooting positions. However, if they do run dry, a slide that hasn't locked back allows for a "slap and rack" or simply a faster transition.
The Muscle Memory Factor: If the slide locks back, the shooter must either hit the slide release or pull the slide rearward to chamber the first round of the new magazine.
The "Dead Trigger" vs. Locked Slide: While a "dead trigger" (clicking on an empty chamber) tells you you're empty just as clearly as a locked slide, many top shooters find it faster to rack a slide that is already forward than to fiddle with a slide release lever that might be small or stiff under pressure.
This is the most common technical reason. IPSC shooters use a very high, aggressive "thumbs-forward" grip to control recoil.
Lever Interference: With a standard slide stop, a shooter’s thumb often rests directly on the lever. During a course of fire, the thumb can accidentally bump the lever upward, locking the slide open while there are still rounds in the magazine.
The Solution: Many competitors use a shielded slide stop or a disabled slide stop (where the internal "nub" that interacts with the magazine follower is filed down). This ensures the gun only stops firing when the shooter wants it to, not because of a grip error.
Competition pistols are often fine-tuned machines with parts that aren't "standard."
Follower Issues: Many high-capacity competition magazines use specialized followers designed to squeeze in an extra round (e.g., 20 or 21 rounds in a 140mm magazine). These followers often lack the geometry to reliably engage the slide stop.
Weakened Springs: To ensure the slide cycles as fast as possible, shooters use lighter recoil springs. A slide locking back puts extra stress on the magazine spring to push the lever up at the exact right millisecond; disabling the lock-back removes this potential point of failure.
Repeatedly slamming a slide forward from a locked position onto a steel slide stop can cause wear over tens of thousands of rounds—the volume typical of an IPSC Pro. By disabling the lock-back, the shooter reduces the battering on the slide notch and the slide stop pin, potentially extending the life of those critical components.
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