Compatible with the Marlin 39A and Marlin rifles made before 1983 (before the introduction of the safety and the thicker hammer).
For pre-safety/30A models with a safety slot that is .050" deep and .1865" wide.
Hammer channel: .075" deep, .275" wide.
Features:
Extended Length: 1/8" longer than the original JM flat spurs for improved grip.
Optimized Shape: Compound curvature for better thumb fit.
Secure Grip: Deep diamond texturing for a non-slip hold.
Lightweight Construction: Minimal impact on lock time.
User-Friendly: Rounded edges for comfortable, pain-free use.
Ambidextrous: Suitable for left- and right-handed users (except the 1950s model, which is RH only).
Material: CNC-machined from 6061 aluminum, hard-anodized (black or silver).
Specifications for 1950s Model:
Fits rifle hammers without a flange, 0.280" wide or slightly narrower.