Colt Trooper MK III Review

Experience the Colt Trooper MK III, available in .357 Mag, .22 LR, and .22 Mag, with barrel options of 4″, 6″, and 8″. Features double action, a “J” frame, adjustable sights, and a transfer bar safety, in blued or nickel finishes with checkered grips. Introduced in 1969, it marked a significant evolution in the development of revolvers by Colt, offering an affordable yet high-quality alternative to the more expensive Colt Python. This review delves into the history, design, specifications, and legacy of the Colt Trooper MK III, providing a comprehensive overview of this iconic firearm.

Colt Trooper MK III revolver with a blued finish and wooden grips against a white background.

Colt Trooper MK III Specifications

Brand: Colt
Model: Trooper MK III
Calibers: .357 Mag, .22 LR, .22 Mag
Barrel: 4″, 6″, 8″
Action: Double
Frame: “J”
Sights: Adjustable rear, ramp front
Finish: Blued, Nickel
Grip: Checkered
Safety: Transfer bar

Design and Features

The design of the Colt Trooper MK III was a departure from its predecessors, incorporating a new locking mechanism and frame design. One of the most significant changes was the implementation of the Colt’s “J” frame, which provided a sturdy foundation for the revolver. This model also introduced a coil spring action, which was a departure from the leaf springs used in earlier models, resulting in a smoother trigger pull and increased reliability.

Colt Trooper MK III revolver with wooden grips, resting on a black leather surface.

The revolver featured a heavy barrel with a solid rib, adjustable rear sights, and a ramp front sight, contributing to its excellent accuracy. It was chambered in several calibers, including .357 Magnum, .22 Long Rifle, and .22 Magnum, making it versatile for various shooting needs. The .357 Magnum version, in particular, was highly regarded for its balance of power and manageability.

Multiple Calibers
The Trooper MK III was chambered in several calibers, including .357 Magnum, .22 Long Rifle, and .22 Magnum. This versatility made it appealing to a wide range of users, from law enforcement to recreational shooters.

Three different calibers of handgun ammunition displayed in ascending size order on a light background.

Close-up of the barrel of a Colt Trooper MK III revolver showing the model engraving, held outdoors.

Various Barrel Lengths
With barrel lengths of 4-inch, 6-inch, and 8-inch, the Colt Trooper MK III catered to different shooting preferences and scenarios, from self-defense to field use.

Adjustable Rear Sight
The revolver was equipped with an adjustable rear sight, allowing shooters to fine-tune their aim for various distances and shooting conditions.

Open Colt Trooper MK III revolver with loaded cylinder visible, held against an outdoor backdrop with grass and flowers.

Close-up of the trigger and guard of a Colt Trooper MK III revolver, with wooden grip partially visible.

Coil Spring Action
Unlike the leaf springs used in earlier Colt revolvers, the Trooper MK III utilized a coil spring action. This change resulted in a smoother trigger pull, enhancing the shooting experience and reliability of the firearm.

“J” Frame
The Trooper MK III introduced the Colt “J” frame, providing a solid and durable foundation for the revolver. This robust frame design enhanced the revolver’s strength and reliability, making it suitable for the powerful .357 Magnum round.

Disassembled Colt Trooper MK III revolver on a checked work mat.

Pros and Cons

Pros

Robust “J” frame design ensures long-lasting performance.
Adjustable rear and ramp front sights contribute to precise shooting.
Available in multiple calibers (.357 Magnum, .22 LR, .22 Magnum) for diverse use cases.
Coil spring action offers a smoother trigger pull.
Innovative locking mechanism and transfer bar ignition system enhance safety.

Cons

Heavier frame might be less comfortable for some shooters, especially in extended use.
Coil spring mechanism and new lock system could complicate disassembly and maintenance for some users.
Discontinued production can make finding one in good condition challenging and potentially expensive.

My Personal Maintenance Routine Colt Trooper MK III

Colt Trooper MK III revolver on a white towel with cleaning supplies and ammunition boxes.

Safety First Always check to ensure the revolver is unloaded before beginning any maintenance routine. Safety glasses are a must.
Disassembly for Cleaning Carefully disassemble your Colt Trooper MK III according to the manufacturer’s instructions. It’s important not to force any parts apart.
Barrel Cleaning Use a bore brush with gun solvent to scrub the inside of the barrel. Run a cleaning patch through until it comes out clean, ensuring no residue remains.
Cylinder Care Clean each chamber of the cylinder in the same manner as the barrel, ensuring all gunpowder residue and debris are removed.
Lubricate Moving Parts Lightly oil the moving parts of your revolver, including the action and the outside of the barrel and cylinder. This prevents rust and ensures smooth operation.
Inspect Springs and Screws Check all springs and screws for wear or damage. Tighten any loose screws and replace worn springs as needed.
Wipe Down Metal Surfaces Use a soft cloth and a metal cleaner to wipe down all metal surfaces. This step helps protect the finish and prevent corrosion.
Check Grip and Stock Inspect the grip and stock for any signs of wear or damage. Tighten any loose fittings and repair or replace parts as necessary.
Reassemble and Function Check Carefully reassemble your revolver. Once reassembled, perform a function check to ensure everything is working correctly.
Storage Store your Colt Trooper MK III in a dry, cool place. Consider using a silicone-treated gun cloth for an extra layer of protection against rust.

Safety Tips

Even if you’re certain it’s unloaded, handling your revolver as if it were loaded reinforces safe handling practices and prevents accidents.
Prevent unintentional discharges by keeping your finger outside the trigger guard and off the trigger until you’re ready to aim and fire.
Always be mindful of where the muzzle is pointed. Only aim the revolver at your target when you’re prepared to shoot, ensuring the area is safe and clear of unintended targets.
Ensure you’re using the correct caliber and type of ammunition for your Colt Trooper MK III. Using inappropriate or damaged ammunition can lead to dangerous malfunctions.
Shooting can be hazardous to your hearing and sight. Always wear appropriate safety glasses and hearing protection when firing your revolver, even during short sessions.

Colt Trooper MK III: My Expert Ratings and Insights

Aspect	Review Summary	Score
Cleaning Frequency	Requires regular cleaning after use to maintain accuracy and longevity. Discipline in routine is key.	9/10
Lubrication	Essential lubrication of moving parts for smooth operation and reduced wear. Must be done regularly.	8/10
Inspection	Critical examination for wear, tear, or damage is vital after each use, ensuring operational safety.	9/10
Storage Conditions	Stored in a dry, temperate environment to prevent rust and preserve condition. Attention to detail matters.	9/10
Ammunition Check	Frequent checks and rotation of ammunition are crucial for consistent reliability and performance.	9/10
Parts Replacement	Proactive replacement of parts as they show signs of wear ensures the revolver remains in prime condition.	9/10
Professional Servicing	Periodic servicing by a firearms expert is recommended for comprehensive maintenance.	8/10
Accessory Care	Regular maintenance of accessories like holsters and sights extends their life and usefulness.	8/10
Training Regularity	Ongoing practice is necessary to keep shooting skills sharp and to familiarize with the revolver’s specifics.	9/10
Safety Gear Maintenance	Ensuring safety equipment is in top condition is as important as maintaining the firearm itself.	9/10

Colt Trooper MK III revolver with wooden grips lying against a green background.

Conclusion

The Colt Trooper MK III represents a pivotal moment in the history of Colt’s revolver production. Its introduction marked a transition towards modern manufacturing methods while maintaining the quality and reliability that Colt’s firearms are known for. Today, the Trooper MK III is celebrated for its durability, accuracy, and innovative design, making it a cherished model among firearm collectors and enthusiasts alike. Its legacy continues to influence the design and production of revolvers, underscoring Colt’s enduring impact on the firearms industry.

FAQs about Colt Trooper MK III

What calibers is the Colt Trooper MK III available in?
The Trooper MK III is available in several calibers, including .357 Magnum, .22 Long Rifle, and .22 Magnum, catering to a wide range of shooting preferences.
How often should I clean my Colt Trooper MK III?
It’s recommended to clean your revolver after each use to ensure optimal performance and longevity. Even if not used, a quarterly cleaning is advisable to maintain its condition.
Can I use any type of ammunition in my Colt Trooper MK III?
It’s essential to use the correct caliber and high-quality ammunition designed for your specific model to ensure safety and optimal performance.
What’s the best way to store my Colt Trooper MK III?
Store your revolver in a cool, dry place, preferably in a gun safe with a dehumidifier to prevent rust and unauthorized access.
How can I improve the accuracy of my Colt Trooper MK III?
Regular cleaning, proper maintenance, and practice are key. Additionally, you might consider professional adjustments to the sights or trigger if the basics are already covered.
Are there any common issues I should be aware of with the Colt Trooper MK III?
While the Trooper MK III is known for its reliability, wear and tear over time can affect parts like the springs and the timing. Regular inspection and maintenance can prevent or address these issues.
What should I do if my Colt Trooper MK III is not firing accurately?
First, ensure it’s clean and properly lubricated. Check for worn parts and consider having a professional gunsmith inspect the revolver for any needed adjustments or repairs.
Can I customize my Colt Trooper MK III with aftermarket parts?
Yes, there are aftermarket parts available, but it’s crucial to ensure they are compatible with your model and installed by a qualified professional to maintain safety and performance.
How do I ensure my Colt Trooper MK III remains reliable over time?
Adhere to a regular maintenance schedule, including cleaning, lubrication, and periodic inspections by a professional. Also, use quality ammunition and replace worn parts as necessary.
Is the Colt Trooper MK III suitable for beginners?
While the Colt Trooper MK III is an excellent revolver, its suitability for beginners depends on the individual’s comfort level, shooting skills, and dedication to learning proper handling and safety practices.

We’re eager to hear from you! Share your personal stories and opinions about the Colt Trooper MK III in the comments section below. Whether it’s your experiences at the range, maintenance tips, or why you chose it over other revolvers, your insights can guide fellow enthusiasts in making knowledgeable choices. Let’s build a community of informed Colt Trooper MK III owners together!