GROVTEC HAMMER EXTENSION
SKU: 55474138631

GROVTEC HAMMER EXTENSION

Sale price$22.45 Regular price$24.95
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Description

GROVTEC HAMMER EXTENSION13 different hammer extensions to fit your firearm with an exposed hammer after you mount a scope. Note: Due to the varying dimensions of hammers, minor fitting may be required. Select the correct Hammer Extension for your firearm in menu above. We do not recommend the use of our hammer extensions for applications not listed. PART # FIREARMS FIT Hammer Slot Dimensions (W x H) GTHM68 Winchester 94s and Big Bore 94s including angle eject (except 94 22)

13 different hammer extensions to fit your firearm with an exposed hammer after you mount a scope.

Note: Due to the varying dimensions of hammers, minor fitting may be required. 

Select the correct Hammer Extension for your firearm in menu above. 

We do not recommend the use of our hammer extensions for applications not listed.

 

PART #

FIREARMS FIT

Hammer Slot Dimensions (W x H)

GTHM68

Winchester 94s and Big Bore 94s including angle-eject (except 94/22) and Ithaca X-caliber - 

0.360" x 0.139"

GTHM69

Winchester 94/22

0.315" x 0.125"

GTHM70

Marlin Lever Actions 1957-1982

0.320" x 0.094"

GTHM71

Browning BL-22, Astra 357

0.365" x 0.235"

GTHM72

Ruger Blackhawk, H&R Topper, New England Firearms Handi Rifle

0.315" x  0.238"

GTHM73

Browning BLR 1981-1991.  Does not fit 1992 & later models.  Not for use on folding hammers. Ithaca Tikka 12-70 over/under.

0.555" x  0.190"

GTHM74

All Marlin Lever Actions made in 1983 & later including 39A, 39M, 1894, 1894C, 1895S, 336C, 336T, 375, 444S, Glenfield 30A

0.375" x  0.094"

GTHM79

T/C Contender and S&W Model 29 (DOES NOT FIT T/C G2 Contender)

0.500" x  0.190"

GTHM277

Henry Big Boy, Pre 2010 models

0.300" x  0.187"

GTHM283

Henry Single Shot, Henry Big Boy Centerfire Rifles, Post 2010 models

0.306" x  0.109"

GTHM284

Henry 22 Pump and Lever Action rimfire rifles & Rossi 92/22 & Savage Revel .22

0.355" x  0.160"

GTHM285

Browning BLR 1992 -1995 Not for use on folding hammers.

0.630" x  0.208"

GTHM308

Model 36 Marlin (1936-1947) and Marlin 336 (1948-1956)

0.285" x  0.159"

 

 

 

NOTE: MINOR FITTING MAY BE REQUIRED - Not all hammers are made to exact tolerances. Sometimes you may need to lightly file the opening of your grovtec hammer extension to assure a secure fit. We recommend using a small metal file. You can also use some liquid bluing to re-coat the bare metal if necessary.

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55474138631

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4.7 ★★★★★
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Product Reviews
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Verified Purchase
Randall S Jackson
Carnegie, US
★★★★★ 5
JUST RIGHT
Color: 2024-2025 Black
PERFECT FIT WORKS AS ADVERTISED
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jose uribe
Los Angeles, US
★★★★★ 4
No encaja exactamente
Color: 2024-2025 Black
No encaja exactamente
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026
S
Verified Purchase
SAW
Cuba, US
★★★★★ 5
Fit and finish is great.
Color: 2024-2025 Black, Color: 2024-2025 Black
Looks just like the passenger side so now the cab looks submetrical. Only wish they were true grab handles but it is strong and secure. I did remove my stock speaker cover that has the JBL logo and placed it on the UltraEra pillar. Some work was involved.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
J
Verified Purchase
Juan A Gonzalez Skerrett
Port Orchard, US
★★★★★ 5
El consumidor
Color: 2024-2025 Black
Le quedó fenomenal a una Tacoma Sport, 2025
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
J
Verified Purchase
Jon Oz
New York, US
★★★★★ 5
Must have and should be standard.
Color: 2024-2025 Black
Not sure why these aren't standard, but a must have. Fits like factory and bolts on rock solid. Easy install and took me about 10 mins. Color matches trim perfectly. Just wish I could've swapped the speaker cover with the JBL marked cover, but the factory uses push tabs and not screws. I didn't want create any loose parts that would vibrate later. For the cost, it isn't a bad accessory. Worth it in my opinion.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2025

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