Model 173 in combination with model 253 gives the target shooter a more heads up shooting position by providing an additional 0.68" in height. New design also allows for additional dovetail mounting points on each side.
| Tube Diameter: N/A | Mount: Dovetail |
| Riser Height adds: 0.68" | Overall Height: 0.76" |
| Overall Length: 1.625" | Clamp Length: 1.625" |
| Weight: 1.7 oz |
