Shooting SuppliesGrovtecSold by Fin Feather Fur Outfitters

Grovtec

GrovTec Hammer Spur Ext Henry Big Boy 2010 and Later GTHM283

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Hammer Extension

Designed for Henry Big Boy

Larger Contact

Surface for improved grip and

Useful When

Scope clearance makes cocking the

Can Be

Mounted from either the right

Durable Stainless

Steel construction

$12.99
View on Fin Feather Fur Outfitters

You'll be taken to Fin Feather Fur Outfitters to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: GTHM283-811071012836

Overview

Designed for Henry Big Boy rifles from 2010 and later, this hammer extension is intended to improve access and control when cocking the hammer. It is particularly useful on scoped setups where clearance can make the hammer harder to reach. The extension offers a larger contact surface and can be mounted on either the right or left side. Its stainless steel construction gives it a straightforward, purpose-built profile for hunters who want a more manageable hammer interface.

Why Hunters Choose the Grovtec

Adds Larger

Contact surface for easier hammer

Improved Grip

Control at the hammer

Useful When

Scope clearance makes cocking difficult

Can Be

Mounted from either the right

Durable Stainless

Steel construction

Key Features

  • Hammer extension designed for Henry Big Boy 2010 and later models.
  • Provides a larger contact surface for improved grip and control.
  • Useful when scope clearance makes cocking the hammer difficult.
  • Can be mounted from either the right or left side.
  • Durable stainless steel construction.

Best Used For

  • Hunters using scoped Henry Big Boy rifles who need easier hammer access
  • Right- or left-handed shooters wanting flexible hammer extension mounting
  • Users seeking added contact surface for more controlled hammer cocking
  • Owners of Henry Big Boy 2010-and-later rifles needing a fitted hammer spur extension

Specifications

CompatibilityHenry Big Boy 2010 and later
Contact SurfaceLarger contact surface
GripcontrolAdds grip control
MaterialStainless steel
Mounting SideRight or left side
Product TypeHammer Extension
Scoped Gun UseUseful where clearance is an issue

Pros

  • Adds a larger contact surface for easier hammer operation
  • Provides improved grip and control at the hammer
  • Useful when scope clearance makes cocking difficult
  • Can be mounted from either the right or left side
  • Durable stainless steel construction

Considerations & Trade-offs

  • Designed specifically for Henry Big Boy 2010 and later models, so compatibility should be verified before purchase if your rifle is outside that range.
  • The added hammer extension can improve access, but it also changes the hammer profile and may not suit every shooter’s preference or setup.
  • It is most relevant for scoped guns where hammer clearance is tight; if your rifle has ample clearance, the benefit may be limited.
  • Mounting can be done from either side, but installation still requires confirming the orientation that works best for your firearm and shooting hand.

Suggested Comparisons

  • Hammer extensions
  • Lever-action rifle accessories
  • Firearm cocking aids

Suggested Accessories

  • Hammer extension
  • Firearm maintenance tools
  • Gun cleaning supplies
  • Scope-compatible shooting accessories

Frequently Asked Questions

What is the GrovTec Hammer Spur Ext Henry Big Boy 2010 and Later GTHM283 used for?

It is a hammer extension designed to provide a larger contact surface and added grip and control when cocking the hammer.

Is this hammer extension intended for scoped rifles?

Yes. The product description says it is especially useful on scoped guns where clearance can make cocking the hammer difficult.

Which side does the hammer extension mount on?

It may be mounted from either the right or left side.

What material is this hammer extension made from?

The product data lists durable stainless steel construction.

Will this fit any Henry Big Boy rifle?

The title says it is for Henry Big Boy 2010 and later. No other fitment details are provided in the source data.