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GrovTec GTHM283
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

GrovTec

$13.42
Available California compliant

GrovTec Hammer Extension, Fits Henry Single Shot, Henry Big Boy Centerfire Rifles, Post 2010 Models GTHM283

Key Details
Brand GrovTec
Manufacturer Part Number GTHM283
UPC 811071012836
SKU GTHM283
Current Stock 188 available
Quantity Updated Aug 12, 2026 2:06 AM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

GrovTec's inception starts when Bob Grover started working for Michaels of Oregon in 1987. He began working for Michaels in the recoil pad/scope cover department and then moved on to the Machine Shop. He held the roles of Black Oxide Finisher, Machine Operator, Machine setup person, Davenport Lead, Machine Shop Foreman, Manufacturing Supervisor, ISO Coordinator and Manufacturing Manager.

Features
  • Fits Henry Single Shot, Henry Big Boy Centerfire Rifles, Post 2010 models
  • Steel Construction
  • Due to the varying dimensions of hammers, minor fitting may be required.
Specifications
UPC: 811071012836
Manufacturer: GrovTec
Manufacturer Part #: GTHM283
Type: Hammer Extension