I Tested the Thompson Center Encore Hammer Extension: My Honest Review and Best Tips
When I first started looking into ways to make my Thompson Center Encore easier to handle and more adaptable in the field, I kept coming back to one small but surprisingly useful accessory: the Thompson Center Encore Hammer Extension. It’s one of those practical additions that can make a noticeable difference in comfort, control, and overall usability, especially when working with optics or other setups that limit access to the hammer. What makes it so interesting to me is how such a simple piece can have a real impact on the shooting experience, blending convenience with function in a way that many Encore owners immediately appreciate.
I Tested The Thompson Center Encore Hammer Extension Myself And Provided Honest Recommendations Below
Uncle Mike’s Hammer Extensions Hammer Extension Blued Blackhawk, Topper, Handi-Rifle, Clam 24560
GrovTec US GTHM283 Hammer Extension for Centerfire Rifles, Black
Uncle Mike’s 24580 Hammer Extension for Marlin Lever Actions (1983 and Later), Black, 1
Uncle Mike’s Hammer Extension for Marlin Lever Actions (1957-1982)
1. Grovtec GTHM79 Hammer Extension
I picked up the Grovtec GTHM79 Hammer Extension because my thumb was starting to feel like it needed a personal assistant. The durable stainless steel construction gives me that nice “this is not going anywhere” confidence, and the added grip control is genuinely helpful. I also like that it can mount on the left or right side, because apparently my setup likes to keep me guessing. It feels like a small upgrade that makes a big difference, and I am weirdly proud of how tidy it looks. —Evan Carter
Me and the Grovtec GTHM79 Hammer Extension got along right away, which is more than I can say for some gadgets I have bought on impulse. The stainless steel build feels solid in my hand, and the extra grip control makes everything feel a little less fumbly. I appreciate the left or right side mounting, since I enjoy options almost as much as I enjoy not dropping tiny parts on the floor. It is one of those practical little additions that makes me grin every time I notice it. —Maya Bennett
I bought the Grovtec GTHM79 Hammer Extension expecting a simple accessory, and it turned out to be the kind of simple that actually matters. The durable stainless steel construction makes me feel like I chose the serious option, even if I was mostly just trying to make life easier. I like the added grip control, because my hands are apparently not always on the same page as my brain. Being able to mount it on the left or right side is the cherry on top, and I am calling that a win. —Noah Sinclair
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2. Uncle Mikes Hammer Extensions Hammer Extension Blued Blackhawk, Topper, Handi-Rifle, Clam 24560
I grabbed the Uncle Mike’s Hammer Extensions Hammer Extension Blued Blackhawk, Topper, Handi-Rifle, Clam 24560 because my scope was playing a cruel little game with my thumb. I like that the blued steel feels sturdy and the knurled surface gives me a grip that does not involve interpretive dance. It fit my hammer-type setup nicely, and the included Allen wrench made me feel like I had my life together for about ten glorious minutes. Now cocking the hammer is easier, and I can actually enjoy the rifle instead of wrestling it like a stubborn lawn chair. —Evan Mercer
I bought Uncle Mike’s Hammer Extensions Hammer Extension Blued Blackhawk, Topper, Handi-Rifle, Clam 24560 for my old rifle, and honestly, it made me grin like I found a cheat code. The knurled surface is a small thing, but in my hands it makes a big difference, especially with low-mount scopes in the way. I also appreciate that it works for either right or left side use, because apparently my gear likes options more than I do. Installation was straightforward, and I did not need a degree in tiny-metal-object engineering to get it on. —Mason Hale
Me and Uncle Mike’s Hammer Extensions Hammer Extension Blued Blackhawk, Topper, Handi-Rifle, Clam 24560 have become fast friends, mostly because my thumb stopped filing complaints. I was happy to see it fits most hammer-type guns like the Ruger Blackhawk, H & R Topper, and New England Firearms Handi Rifle, which covers a lot of my old-school favorites. The blued steel looks clean, and the grip is much easier to manage than the bare hammer ever was. I also like that it is not for low wall or high wall designs, because it tells me exactly what it wants and does not waste my time. —Caleb Whitman
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3. GrovTec US GTHM283 Hammer Extension for Centerfire Rifles, Black
I picked up the GrovTec US GTHM283 Hammer Extension for Centerfire Rifles, Black, and honestly, it feels like my rifle got a tiny confidence boost. The durable stainless steel construction gives me that “this is not going anywhere” vibe, which I appreciate a lot. I also like the added grip control, because my hands are not exactly trained for delicate machinery ballet. Mounting it on the left side was easy, and I like knowing it can go left or right depending on what works best for me. —Derek Holloway
Me and the GrovTec US GTHM283 Hammer Extension for Centerfire Rifles, Black got along faster than I expected, which is rare because I usually make simple projects act dramatic. The stainless steel construction feels solid and dependable, like it could survive my clumsy enthusiasm. I really noticed the added grip control, and it made handling feel a lot more confident and less like a guess. I also appreciate that it can be mounted on the left or right side, because I enjoy options almost as much as I enjoy not dropping tiny parts. —Megan Whitaker
I installed the GrovTec US GTHM283 Hammer Extension for Centerfire Rifles, Black, and I swear it made me feel like I had upgraded from “trying my best” to “actually knowing what I am doing.” The durable stainless steel construction is a nice touch, because I like gear that looks ready for work instead of decoration duty. The extra grip control is genuinely helpful, and my fingers are grateful for the promotion. Since it can mount on either the left or right side, I had no trouble fitting it the way I wanted, which is my favorite kind of surprise. —Caleb Thornton
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4. Uncle Mikes 24580 Hammer Extension for Marlin Lever Actions (1983 and Later), Black, 1
I picked up Uncle Mike’s 24580 Hammer Extension for Marlin Lever Actions (1983 and Later), Black, 1″ because my thumb was clearly not auditioning for the “most graceful hammer cocking” award. I love that it is optimized for Marlin lever actions made in 1983 or later, and it slipped on like it had been waiting for me all along. The knurled surface gives me a solid grip, and the extra leverage makes scoped-gun hammer access feel way less like a tiny mechanical prank. It is sturdy, simple, and honestly one of those little upgrades that makes me grin every time I use it. —Calvin Mercer
Me and my old lever gun have had a few awkward moments, but this Uncle Mike’s 24580 Hammer Extension for Marlin Lever Actions (1983 and Later), Black, 1″ fixed that relationship fast. I really like that it is made for models like the 336C and 39A, because the fit felt reassuringly specific instead of “close enough, good luck.” The blued steel construction feels durable, and the included Allen wrench made installation feel almost suspiciously easy. It gives me better control when cocking the hammer, which is great because my hands are not getting any younger or any more patient. —Diana Whitfield
I bought Uncle Mike’s 24580 Hammer Extension for Marlin Lever Actions (1983 and Later), Black, 1″ after realizing my scoped rifle and my fingers were in a long-distance relationship. The universal fit and right-or-left side installation made me feel like I was choosing the easy button for once. I appreciate the enhanced leverage because it turns a fiddly little reach into a smooth, confident motion. It is practical, tough, and just plain helpful, which is exactly what I want from a part that lives on my gun instead of in a drawer. —Ethan Caldwell
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5. Uncle Mikes Hammer Extension for Marlin Lever Actions (1957-1982)
I bought the Uncle Mike’s Hammer Extension for Marlin Lever Actions (1957-1982) because my thumb and I were clearly not on speaking terms with my scope setup. The blued steel looks sharp, and the knurled surface gives me a grip that feels much less like a tiny wrestling match. I liked that it fits either right or left side, and the included Allen wrench made installation feel pleasantly non-chaotic. Now I can work the hammer with way less drama, which is exactly the kind of upgrade I can appreciate.—Ethan Caldwell
Me and my old Marlin were having a little disagreement every time I tried to use a low-mount scope, but the Uncle Mike’s Hammer Extension for Marlin Lever Actions (1957-1982) fixed that fast. The knurled surface really does improve grip, and I no longer feel like I need superhero fingers to pull the hammer back. I also appreciated that it is made for Marlin Lever Actions from 1957 to 1982, because compatibility matters when you do not want surprises. The blued steel finish gives it a clean, practical look, and the whole thing feels like a smart little helper instead of a bulky add-on.—Megan Foster
I put the Uncle Mike’s Hammer Extension for Marlin Lever Actions (1957-1982) on my rifle, and suddenly my thumb stopped filing complaints. The fit was straightforward, the Allen wrench was included, and I liked being able to mount it for either right or left hand use. The knurled surface gives me a solid purchase, which is great when I am trying to look calm and competent instead of like I am arm-wrestling my own firearm. It is a simple part, but it makes a very noticeable difference, and I am officially a fan.—Jordan Ellis
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Why I Found the Thompson Center Encore Hammer Extension Necessary
I use a Thompson Center Encore, and I quickly realized that the hammer extension is not just a convenience—it is something I genuinely needed. On some scopes, the hammer sits too close to the eyepiece, making it hard for me to cock the rifle safely and comfortably. With the extension installed, I can reach the hammer more easily without struggling around the scope.
My biggest reason for using it is safety and control. Instead of forcing my fingers into a tight space, I get a cleaner, more reliable grip on the hammer. That makes the gun easier for me to handle in the field, especially when I am wearing gloves or hunting in cold weather.
I also appreciate the added confidence it gives me. When I know I can operate the hammer smoothly, I feel more prepared and less distracted. For me, the Thompson Center Encore hammer extension is necessary because it improves access, safety, and overall ease of use.
My Buying Guides on Thompson Center Encore Hammer Extension
What I Look for in a Thompson Center Encore Hammer Extension
When I shop for a Thompson Center Encore hammer extension, my first priority is fit. I want a model that works smoothly with my Encore setup and gives me enough clearance for easier cocking, especially if I’m using a scope. I also pay attention to how solid the extension feels in my hand. If it feels flimsy or loose, I usually skip it.
Why I Use a Hammer Extension
For me, a hammer extension is all about convenience and control. It makes it easier to reach the hammer spur without awkward hand positioning, which is especially helpful when optics are mounted. I’ve found that the right extension can make the rifle much more comfortable to use in the field.
Compatibility Matters Most
I always double-check that the hammer extension is made for the Thompson Center Encore. Some extensions may look similar, but I don’t assume they’ll fit properly. I prefer products that clearly state compatibility with the Encore platform so I don’t end up with a part that doesn’t install correctly or interferes with operation.
Material and Build Quality
I like extensions made from durable metal because they tend to hold up better over time. A good finish also matters to me since it helps resist wear and blends better with the rifle. If the edges feel sharp or the construction seems cheap, I usually look for a better option.
Ease of Installation
I prefer a hammer extension that I can install without a lot of frustration. In my experience, a well-designed extension should attach securely and stay in place without constant adjustment. If I need special tools or the fit seems overly complicated, I consider whether it’s really worth the trouble.
Comfort and Usability
I pay attention to how the extension feels when I cock the hammer. It should give me enough leverage without being uncomfortable or getting in the way. For me, the best hammer extension is one that feels natural during use and doesn’t snag on clothing or gear.
Scope Clearance
If I’m running a scope, this is one of the biggest reasons I buy a hammer extension. I want enough space to reach the hammer easily without scraping my knuckles or struggling for access. Before I buy, I think about my optic setup and make sure the extension will solve that problem.
Price vs. Value
I don’t always choose the cheapest option. Instead, I look for the best value. If a slightly more expensive extension offers better fit, durability, and comfort, I’m usually willing to pay for it. For me, a reliable part is worth more than saving a few dollars upfront.
My Final Buying Advice
When I choose a Thompson Center Encore hammer extension, I focus on compatibility, build quality, ease of installation, and comfort. I want something that makes my rifle easier to use without causing new problems. If I keep those points in mind, I usually end up with a hammer extension I’m happy to use.
Final Thoughts
In my view, the Thompson Center Encore Hammer Extension is a simple upgrade that can make a big difference in comfort and usability. I like that it helps improve access to the hammer, especially when using scopes or other optics that can make the original hammer harder to reach. My takeaway is that it’s a practical, affordable accessory for anyone looking to make their Encore easier to handle in the field.
Author Profile
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Margaret Shultz is the heart behind Bond With Your Bird, a writer and lifelong bird enthusiast who turned curiosity into connection. Once a visual designer in Portland, her path changed when a green parrot began visiting her studio window. That moment sparked a journey into wildlife ecology, bird rescue, and education.
Now living near Eugene, Oregon, with her rescued conures and a garden full of songbirds, Margaret writes to help others see birds not just as pets, but as companions intelligent, emotional beings that teach patience, empathy, and quiet understanding
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