GROVTEC HAMMER EXT MODEL 336 MARLIN
$8.90
Enhance your Marlin 336 lever-action rifle with the GrovTec Hammer Ext, a premium aftermarket upgrade that improves usability and performance. Designed specifically for the iconic model, this hammer extension allows for quicker, more efficient operation, making it an essential addition for hunters and sport shooters looking to maximize their shooting experience.
57 in stock
The GrovTec GTHM308 hammer extension fits Marlin 36 rifles manufactured from 1936 to 1947 and Marlin 336 rifles manufactured from 1948 to 1956.
This hammer extension has a black finish.
- Manufacturer: GrovTec
- Fits: Marlin 36 (1936-1947) and 336 (1948-1956)
- Color: Black
- Manufacturer Part Number: GTHM308
- UPC: 811071013161
- Category: Parts
| Weight | 0.063 lbs |
|---|---|
| Dimensions | 5.750 × 3.000 × 1.250 in |
| Manufacturer | GrovTec |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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