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Put a scope on a Henry .22 lever gun and you run into the same headache every time: your thumb barely fits between the hammer and the ocular bell. The GrovTec GTHM284 hammer extension solves that by adding a horizontal spur that sticks out past the scope, giving you a bigger contact patch and real leverage. It's made from CNC-machined steel with an aggressive knurled texture, so you get a solid grip even with gloves on or cold hands in the deer stand.
The wider surface makes cocking and, more importantly, decocking a whole lot safer. Bringing a hammer down from full cock with a slick, cramped thumb is how accidents happen, and the extra purchase this spur gives you takes that guesswork away. Folks running it report much more positive control moving the hammer to the half-cock position, and plenty of owners add it even on iron-sighted rifles just because it feels better under the thumb.
This one is built for Henry .22 rimfire pump and lever-action rifles as well as the Rossi 92. It clamps onto the existing hammer and can be mounted on either the right or left side, so lefties and righties are both covered. Installation is a genuine two-minute job with basic tools, and a dab of thread locker on the screw keeps it planted through recoil and repeated cycling.
Worth knowing before you buy: GrovTec builds these to fit specific hammer profiles, and this GTHM284 is matched to the standard Henry .22 rimfire pump and lever guns and the Rossi 92. It's a small, inexpensive upgrade that punches way above its size for anyone shooting a scoped lever action.
Yes, this extension is designed for Henry .22 rimfire pump and lever-action rifles, and it's especially handy once you've mounted a scope. The horizontal spur reaches out past the scope so your thumb has room to work the hammer. Just confirm your rifle is one of the standard .22 rimfire pump or lever models it's cut for before installing.
It does. The GTHM284 is fit-matched to both the Henry .22 rimfire pump and lever guns and the Rossi 92. GrovTec builds each extension to a specific hammer profile, so use it only on the models listed for this part.
It's about as easy as accessories get. Most owners have it clamped on and squared away in around two minutes with basic hand tools. A small amount of thread locker on the screw is a good idea so it stays put through repeated cocking and recoil.
Absolutely. The extension can be mounted on either the right or left side of the hammer to match how you shoot. That flexibility lets you position the spur where it clears your scope and sits naturally under your thumb.
| UPC | 811071012843 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GTHM284 |
| Color | HENRY 22/MAG |
| Length | 5.3000 |
| Model | |
| Product Type | Hammer Extension |
| Shipping Weight | 0.055 |
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