DESCRIPTION

The GrovTec GTHM71 Hammer Extension provides a wider, easier-to-reach thumb surface for operating the hammer on compatible Browning BL-22 rifles and Astra Model 357 revolvers.

It is particularly useful when a mounted scope restricts access to the original hammer spur. The ambidextrous design can be installed on either side and secures to the hammer using the two supplied grub screws.

FEATURES

• Improves access to the hammer around a mounted scope

• Wider contact surface offers greater thumb control

• Ambidextrous design mounts on the left or right

• Strong all-steel construction

• Black oxide finish

• Simple clamp-on installation

• Made in the USA

SPECIFICATIONS

• Brand: GrovTec

• Product type: Hammer extension

• Compatible models: Browning BL-22 and Astra Model 357

• Material: Steel

• Finish: Black oxide

• Mounting orientation: Left or right

• Manufacturer part number: GTHM71

• UPC: 895474001710

• Quantity: One

PACKAGE INCLUDES

• 1 × hammer extension

• 2 × grub screws

• 1 × hex key

BEST SUITED FOR

• Browning BL-22 rifles

• Astra Model 357 revolvers

• Firearms with restricted hammer access caused by a mounted optic

• Shooters wanting a larger, more accessible hammer surface

FREQUENTLY ASKED QUESTIONS

Which firearms does the GTHM71 fit?

It is specifically listed for the Browning BL-22 and Astra Model 357. It should not be installed on unlisted firearm models.

Can it be fitted on either side?

Yes. The ambidextrous design allows left- or right-side installation.

Does it require permanent modification?

The extension normally clamps onto the existing hammer using two grub screws. However, minor fitting may occasionally be necessary because cast-hammer dimensions can vary.

Why is a hammer extension useful with a scope?

A scope can reduce the space available above the hammer. The extension moves the thumb contact point to the side, making the hammer easier to reach and control.

Can I install it myself?

Installation is straightforward, but the firearm must be completely unloaded beforehand. After fitting, confirm that the hammer moves freely and the firearm functions safely. Consult a qualified gunsmith if fitting or operation is uncertain.