The GrovTec Hammer Ext Model 336 Marlin is a compact steel hammer extension designed specifically for classic Marlin Model 36 and Model 336 rifles. Its clamp-on design adds a serrated, knurled lever to the side of the hammer spur, giving shooters a larger, more secure surface for cocking and decocking the hammer, especially when a scope is mounted or gloves are worn.

This extension provides faster, more confident hammer control without altering the rifle’s original lines. The hollow, CNC-machined steel body keeps weight low so hammer speed and lock time remain unaffected, while the matte black oxide or blued finish blends naturally with traditional lever-action aesthetics. Ideal for hunting, range use, and general rifle handling where safe, positive hammer operation is important, it reflects GrovTec’s focus on practical, shooter-friendly upgrades for lever-action rifles.

Key Features:

• Manufacturer: GrovTec
• Model: Hammer Extension GTHM308
• Gun Type: Rifle
• Firearm Fit: Marlin Model 36 (1936–1947), Marlin Model 336 (1948–1956)
• Material: Steel
• Finish Color: Black Oxide / Blued Matte
• Size: Extension approximately 5/8" long x 3/8" diameter
• Hand: Ambidextrous clamp-on design
• Unique Features: Serrated knurled lever, hollow lightweight construction, secure Allen screw attachment