Locking Turret
A scope turret that locks against accidental movement until the shooter deliberately releases it, guarding a setting from bumps and snags in the field.
A locking turret holds its position with a mechanical lock that must be released before the dial will turn. The shooter typically lifts, presses, or pulls the knob to unlock it, makes the adjustment, then re-engages the lock to secure the new setting. This protects against the dial creeping under recoil, brush, or contact with gear, a real concern on a tall exposed turret that offers a large surface to snag.
The lock complements rather than replaces a zero stop, which sets the lower limit of travel; the lock instead guards every setting along the range of dialing. Shooters who frequently change elevation for varying distances value a lock that releases cleanly, since a stiff or fiddly mechanism can slow the very corrections the turret is meant to make.