- Replaces existing factory sights
- Full windage and elevation adjustment
- Not for carbine barrels
- Front diameter is .060"
- Rear diameter is .035"
TG109 sights are design for Marlin 336 rifle-length models with a ramped front sight. The front sight is not compatible with carbine-length models or barrel-mounted sights front sights without the ramp. For Carbine-length barrels, we recommend just replacing the front sight with a 3/8 inch Dovetail sight
in the height that most closely matches your factory sight (sight height varies by caliber and barrel length).