Description
Master Lock has been the go-to name in trigger locks for a long time, and the 90DSPT is a big reason why. It's a keyed trigger guard lock that slips over the trigger area and blocks access until you unlock it, making it a practical piece of safety gear whether your firearms live in a closet, a safe, or a truck between range trips. The body is built from steel and zinc, so it holds up to real handling instead of feeling flimsy in your hand.
What the 90DSPT Brings to the Table
This lock uses an adjustable ratchet mechanism with a positive lock, meaning it cinches down snug and stays put once it's set. Inside is a 4-pin tumbler cylinder that resists picking better than the cheap giveaway locks a lot of people end up with. Soft rubber pads sit against the metal contact points, so you're not grinding steel against your firearm's bluing or coating every time you put it on or take it off.
Fit and Everyday Use
The 90DSPT is designed as a universal fit and works with a wide range of handguns, rifles, and shotguns. The post is sized to handle wider trigger guards, which is handy if you're locking up something beefier than a standard pistol. That said, guns without a trigger guard, some lever actions, and setups with oversized or extended triggers may not seat properly, so it's worth a quick test fit with your specific firearm.
Keyed Different, Straightforward Operation
This version ships keyed different, so each lock carries its own unique key set rather than sharing one key across a batch. Two brass keys come with the lock, which gives you a backup right out of the package. Master Lock backs the 90DSPT with a limited lifetime warranty, which tells you plenty about how they expect it to hold up over years of use.
Key Specifications
- Manufacturer: Master Lock
- Manufacturer Part Number: 90DSPT
- Model: Universal
- UPC: 071649087431
- Product Type: Trigger Guard Lock
- Color: Blue
- Body Material: Steel and Zinc
- Locking Mechanism: 4-Pin Tumbler Cylinder
- Keying: Keyed Different
- Adjustment: Adjustable Ratchet, Positive Locking
- Post Size: 1-Inch Post for Wider Trigger Guards
- Model Fit: All Handguns, Rifles, and Shotguns
- Warranty: Limited Lifetime Warranty
What’s Included
- Master Lock 90DSPT trigger guard lock
- 2 brass keys
Frequently Asked Questions
What does keyed different mean on the 90DSPT?
Keyed different means each lock comes with its own unique key set, so one lock's key won't open another. This version ships with two brass keys per lock, giving you a spare in case one gets misplaced. If you'd rather have a single key open multiple locks, you'd want the keyed alike version instead.
Will the Master Lock 90DSPT fit my firearm?
It's built as a universal trigger guard lock and works with most handguns, rifles, and shotguns that have a standard trigger guard. The one-inch post is sized to handle wider guards too. Firearms without a trigger guard, some lever actions, and guns with oversized or extended triggers may not seat correctly, so a quick test fit is smart.
Will this trigger guard lock scratch my gun's finish?
No, the 90DSPT has soft rubber pads at the contact points specifically to protect your firearm's finish from marring and scratching. The metal body never sits directly against the gun. It's a nice touch that keeps your bluing or coating looking clean over repeated use.
Should I use the 90DSPT on a loaded firearm?
No, this lock should only be applied to an unloaded firearm. Attaching any trigger lock to a loaded gun creates a risk of accidental discharge. Always clear and verify your firearm is empty before installing the lock.





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