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Mounting a scope on a Winchester 94 is a great upgrade until you go to thumb the hammer and find the spur tucked up tight against the scope tube. That is exactly the headache the GrovTec GTHM68 hammer extension solves. It adds a horizontal spur to the factory hammer, giving your thumb a wider, more accessible surface so you can cock and lower the hammer cleanly even with limited clearance under an optic.
This extension is built specifically for Winchester 94s and Big Bore 94s, including angle-eject models, along with the Ithaca X-Caliber. It does not fit the 94/22, so if you have a rimfire Winchester you will want the GTHM69 instead. GrovTec makes over a dozen model-specific extensions because hammer dimensions vary from gun to gun, and matching the right one to your rifle is what makes the fit work. Stick to the listed models and you will be in good shape.
Machined from steel with a black finish, the GTHM68 is made in the USA and carries the kind of build quality GrovTec is known for. It measures roughly 5.3 inches and clamps onto the hammer with a set screw. One handy detail is that you can mount it on either the left or right side of the hammer, so you can angle the thumb pad wherever your hand and your scope setup want it.
Because hammers differ slightly between individual rifles, a little minor fitting is normal to get the extension seated just right. A touch of thread locker on the set screw goes a long way toward keeping it put through repeated cocking. Take your time on the install, confirm it clears the bolt and scope through a full cycle, and you will end up with a hammer that is far easier to work under glass than the bare factory spur ever was.
No, this extension is not made for the 94/22. It fits the centerfire Winchester 94 and Big Bore 94, including angle-eject models, plus the Ithaca X-Caliber. For a 94/22 you will want GrovTec's GTHM69 instead, which is machined for that hammer.
Once you mount a scope on a Winchester 94, the factory hammer spur can sit tight against the scope tube and become tough to reach with your thumb. The extension adds a horizontal surface that gives you more room to cock and safely lower the hammer under the optic. It is one of the most common fixes for scoped lever actions.
Some minor fitting is normal since hammer dimensions vary slightly from rifle to rifle. Most folks get it seated with a little patience, and a dab of thread locker on the set screw helps keep it from backing out during repeated use. Always cycle the action fully to confirm it clears both the bolt and your scope before heading out.
Yes. The GTHM68 can be installed on either side of the hammer, so you can position the thumb pad wherever it feels most natural and clears your scope best. That flexibility makes it easy to tailor to your grip and your particular setup.
| UPC | 895474001680 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GTHM68 |
| Color | WIN 94 & BIG BORE 94, HENRY 22 |
| Length | 5.3000 |
| Model | |
| Product Type | Hammer Extension |
| Shipping Weight | 0.0313 |
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