Description

GrovTec GTHM283 Henry Big Boy Hammer Extension – Steel Construction, Fits Post-2010 Henry Models

Upgrade the function and handling of your Henry rifle with the GrovTec GTHM283 Hammer Extension. Designed for post-2010 Henry Big Boy Centerfire Rifles and Henry Single Shot models, this extension adds a larger, horizontal contact area to the hammer, allowing for easier and safer thumb engagement—especially helpful for use with scopes or gloves.​

Built from precision-machined steel for lasting durability, the GTHM283 provides outstanding grip and control in all conditions. Due to slight manufacturing differences in hammer dimensions, minor fitting may be necessary for perfect installation—simply file as needed for a secure fit.​

Key Features:

• Fits: Henry Single Shot, Henry Big Boy Centerfire Rifles (post-2010 models)
• Material: Steel construction for maximum strength and wear resistance​
• Finish: Black oxide for corrosion protection​
• Hammer slot dimensions: 0.306” x 0.109”​
• Provides enhanced hammer accessibility, excellent for scoped or gloved use​
• Minor fitting may be required due to varying hammer tolerances​

UPC: 811071012836

Manufacturer Part Number: GTHM283